20457370 has 16 divisors (see below), whose sum is σ = 36875808. Its totient is φ = 8171280.

The previous prime is 20457347. The next prime is 20457377. The reversal of 20457370 is 7375402.

It is not an unprimeable number, because it can be changed into a prime (20457377) 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, 10837 + ... + 12583.

It is an arithmetic number, because the mean of its divisors is an integer number (2304738).

Almost surely, 2^20457370 is an apocalyptic number.

20457370 is a deficient number, since it is larger than the sum of its proper divisors (16418438).

20457370 is a wasteful number, since it uses less digits than its factorization.

20457370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 20457370 is about 4522.9824231363. The cubic root of 20457370 is about 273.4953415269.

The spelling of 20457370 in words is "twenty million, four hundred fifty-seven thousand, three hundred seventy".