20295728 has 40 divisors (see below), whose sum is σ = 40658112. Its totient is φ = 9809408.

The previous prime is 20295727. The next prime is 20295733. The reversal of 20295728 is 82759202.

It is not an unprimeable number, because it can be changed into a prime (20295727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102926 + ... + 103122.

Almost surely, 2^20295728 is an apocalyptic number.

It is an amenable number.

20295728 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20295728 is a wasteful number, since it uses less digits than its factorization.

20295728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 20295728 is about 4505.0780237417. The cubic root of 20295728 is about 272.7731033013.

The spelling of 20295728 in words is "twenty million, two hundred ninety-five thousand, seven hundred twenty-eight".