20930516 has 12 divisors (see below), whose sum is σ = 37144800. Its totient is φ = 10317720.

The previous prime is 20930513. The next prime is 20930579. The reversal of 20930516 is 61503902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20930513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36566 + ... + 37133.

It is an arithmetic number, because the mean of its divisors is an integer number (3095400).

Almost surely, 2^20930516 is an apocalyptic number.

It is an amenable number.

20930516 is a deficient number, since it is larger than the sum of its proper divisors (16214284).

20930516 is a wasteful number, since it uses less digits than its factorization.

20930516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73774 (or 73772 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 20930516 is about 4574.9880874162. The cubic root of 20930516 is about 275.5877939745.

The spelling of 20930516 in words is "twenty million, nine hundred thirty thousand, five hundred sixteen".