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152412520 = 235131092689
BaseRepresentation
bin10010001010110…
…10000101101000
3101121210100200011
421011122011220
5303004200040
623042421304
73530325241
oct1105320550
9347710604
10152412520
117903a867
1243061834
1325765030
1416355cc8
15d5a93ea
hex915a168

152412520 has 64 divisors (see below), whose sum is σ = 372834000. Its totient is φ = 55738368.

The previous prime is 152412503. The next prime is 152412529. The reversal of 152412520 is 25214251.

It can be written as a sum of positive squares in 8 ways, for example, as 15382084 + 137030436 = 3922^2 + 11706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 152412491 and 152412500.

It is not an unprimeable number, because it can be changed into a prime (152412529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55336 + ... + 58024.

Almost surely, 2152412520 is an apocalyptic number.

152412520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 152412520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186417000).

152412520 is an abundant number, since it is smaller than the sum of its proper divisors (220421480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

152412520 is a wasteful number, since it uses less digits than its factorization.

152412520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 152412520 is about 12345.5465654624. The cubic root of 152412520 is about 534.1626870852.

Adding to 152412520 its reverse (25214251), we get a palindrome (177626771).

The spelling of 152412520 in words is "one hundred fifty-two million, four hundred twelve thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 109 130 218 260 436 520 545 872 1090 1417 2180 2689 2834 4360 5378 5668 7085 10756 11336 13445 14170 21512 26890 28340 34957 53780 56680 69914 107560 139828 174785 279656 293101 349570 586202 699140 1172404 1398280 1465505 2344808 2931010 3810313 5862020 7620626 11724040 15241252 19051565 30482504 38103130 76206260 152412520