20528370 has 32 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 5474160.

The previous prime is 20528369. The next prime is 20528399. The reversal of 20528370 is 7382502.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 37746 + ... + 38285.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^20528370 is an apocalyptic number.

20528370 is an abundant number, since it is smaller than the sum of its proper divisors (34214670).

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

20528370 is a wasteful number, since it uses less digits than its factorization.

20528370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76047 (or 76041 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20528370 is about 4530.8244282912. The cubic root of 20528370 is about 273.8113767426.

The spelling of 20528370 in words is "twenty million, five hundred twenty-eight thousand, three hundred seventy".