20913310 has 16 divisors (see below), whose sum is σ = 41066352. Its totient is φ = 7604800.

The previous prime is 20913293. The next prime is 20913329. The reversal of 20913310 is 1331902.

It is a super-2 number, since 2×20913310² = 874733070312200, 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 7 ways as a sum of consecutive naturals, for example, 94951 + ... + 95170.

It is an arithmetic number, because the mean of its divisors is an integer number (2566647).

Almost surely, 2^20913310 is an apocalyptic number.

20913310 is a deficient number, since it is larger than the sum of its proper divisors (20153042).

20913310 is a wasteful number, since it uses less digits than its factorization.

20913310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190139.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20913310 is about 4573.1072587465. The cubic root of 20913310 is about 275.5122573194.

The spelling of 20913310 in words is "twenty million, nine hundred thirteen thousand, three hundred ten".