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152542428 = 223173132389
BaseRepresentation
bin10010001011110…
…01110011011100
3101122000221212120
421011321303130
5303022324203
623045302540
73531406053
oct1105716334
9348027776
10152542428
1179119425
1243104a50
13257ac1bc
141638b39a
15d5d2b53
hex9179cdc

152542428 has 48 divisors (see below), whose sum is σ = 378231840. Its totient is φ = 47683584.

The previous prime is 152542391. The next prime is 152542447. The reversal of 152542428 is 824245251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62658 + ... + 65046.

It is an arithmetic number, because the mean of its divisors is an integer number (7879830).

Almost surely, 2152542428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 152542428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189115920).

152542428 is an abundant number, since it is smaller than the sum of its proper divisors (225689412).

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

152542428 is a wasteful number, since it uses less digits than its factorization.

152542428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726 (or 2724 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 152542428 is about 12350.8067752678. The cubic root of 152542428 is about 534.3144075615.

Adding to 152542428 its reverse (824245251), we get a palindrome (976787679).

The spelling of 152542428 in words is "one hundred fifty-two million, five hundred forty-two thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 313 626 939 1252 1878 2389 3756 4778 5321 7167 9556 10642 14334 15963 21284 28668 31926 40613 63852 81226 121839 162452 243678 487356 747757 1495514 2243271 2991028 4486542 8973084 12711869 25423738 38135607 50847476 76271214 152542428