20028470 has 96 divisors (see below), whose sum is σ = 48625920. Its totient is φ = 5754240.

The previous prime is 20028467. The next prime is 20028509. The reversal of 20028470 is 7482002.

It is a super-2 number, since 2×20028470² = 802279221081800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 541292 + ... + 541328.

It is an arithmetic number, because the mean of its divisors is an integer number (506520).

Almost surely, 2^20028470 is an apocalyptic number.

20028470 is an abundant number, since it is smaller than the sum of its proper divisors (28597450).

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

20028470 is a wasteful number, since it uses less digits than its factorization.

20028470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20028470 is about 4475.3178658057. The cubic root of 20028470 is about 271.5704997085.

The spelling of 20028470 in words is "twenty million, twenty-eight thousand, four hundred seventy".