20914916 has 48 divisors (see below), whose sum is σ = 42517440. Its totient is φ = 8910720.

The previous prime is 20914903. The next prime is 20914919. The reversal of 20914916 is 61941902.

It is a super-2 number, since 2×20914916² = 874867422574112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20914919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46991 + ... + 47433.

It is an arithmetic number, because the mean of its divisors is an integer number (885780).

Almost surely, 2^20914916 is an apocalyptic number.

It is an amenable number.

20914916 is an abundant number, since it is smaller than the sum of its proper divisors (21602524).

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

20914916 is a wasteful number, since it uses less digits than its factorization.

20914916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 20914916 is about 4573.2828471460. The cubic root of 20914916 is about 275.5193096282.

It can be divided in two parts, 2091 and 4916, that added together give a palindrome (7007).

The spelling of 20914916 in words is "twenty million, nine hundred fourteen thousand, nine hundred sixteen".