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152745890 = 2511432751
BaseRepresentation
bin10010001101010…
…11011110100010
3101122102021222012
421012223132202
5303100332030
623053512522
73533214203
oct1106533642
9348367865
10152745890
1179248280
12431a2742
13258509ab
14164015aa
15d623095
hex91ab7a2

152745890 has 48 divisors (see below), whose sum is σ = 307483776. Its totient is φ = 54180000.

The previous prime is 152745889. The next prime is 152745913. The reversal of 152745890 is 98547251.

152745890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203015 + ... + 203765.

It is an arithmetic number, because the mean of its divisors is an integer number (6405912).

Almost surely, 2152745890 is an apocalyptic number.

152745890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

152745890 is an abundant number, since it is smaller than the sum of its proper divisors (154737886).

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

152745890 is a wasteful number, since it uses less digits than its factorization.

152745890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 152745890 is about 12359.0408203873. The cubic root of 152745890 is about 534.5518592688.

The spelling of 152745890 in words is "one hundred fifty-two million, seven hundred forty-five thousand, eight hundred ninety".

Divisors: 1 2 5 10 11 22 43 55 86 110 215 430 473 751 946 1502 1849 2365 3698 3755 4730 7510 8261 9245 16522 18490 20339 32293 40678 41305 64586 82610 101695 161465 203390 322930 355223 710446 1388599 1776115 2777198 3552230 6942995 13885990 15274589 30549178 76372945 152745890