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152513890 = 25109139921
BaseRepresentation
bin10010001011100…
…10110101100010
3101121222111201121
421011302311202
5303020421030
623044522454
73531226624
oct1105626542
9347874647
10152513890
11790a9a41
12430b042a
132579c209
1416380c14
15d5c947a
hex9172d62

152513890 has 16 divisors (see below), whose sum is σ = 277045560. Its totient is φ = 60445440.

The previous prime is 152513887. The next prime is 152513899. The reversal of 152513890 is 98315251.

It can be written as a sum of positive squares in 4 ways, for example, as 81162081 + 71351809 = 9009^2 + 8447^2 .

It is not an unprimeable number, because it can be changed into a prime (152513899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68871 + ... + 71050.

Almost surely, 2152513890 is an apocalyptic number.

152513890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

152513890 is a deficient number, since it is larger than the sum of its proper divisors (124531670).

152513890 is a wasteful number, since it uses less digits than its factorization.

152513890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140037.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 152513890 is about 12349.6514120845. The cubic root of 152513890 is about 534.2810852136.

The spelling of 152513890 in words is "one hundred fifty-two million, five hundred thirteen thousand, eight hundred ninety".

Divisors: 1 2 5 10 109 218 545 1090 139921 279842 699605 1399210 15251389 30502778 76256945 152513890