20150928 has 60 divisors (see below), whose sum is σ = 64454208. Its totient is φ = 5757120.

The previous prime is 20150891. The next prime is 20150953. The reversal of 20150928 is 82905102.

It is a super-2 number, since 2×20150928² = 812119798522368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8988 + ... + 11003.

Almost surely, 2^20150928 is an apocalyptic number.

20150928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20150928 is an abundant number, since it is smaller than the sum of its proper divisors (44303280).

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

20150928 is a wasteful number, since it uses less digits than its factorization.

20150928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012 (or 20003 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 20150928 is about 4488.9785029559. The cubic root of 20150928 is about 272.1228539602.

The spelling of 20150928 in words is "twenty million, one hundred fifty thousand, nine hundred twenty-eight".