20955370 has 16 divisors (see below), whose sum is σ = 37789920. Its totient is φ = 8366544.

The previous prime is 20955367. The next prime is 20955397. The reversal of 20955370 is 7355902.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4801 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (2361870).

Almost surely, 2^20955370 is an apocalyptic number.

20955370 is a deficient number, since it is larger than the sum of its proper divisors (16834550).

20955370 is a wasteful number, since it uses less digits than its factorization.

20955370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 20955370 is about 4577.7035727535. The cubic root of 20955370 is about 275.6968333261.

The spelling of 20955370 in words is "twenty million, nine hundred fifty-five thousand, three hundred seventy".