20953704 has 32 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 6969600.

The previous prime is 20953693. The next prime is 20953717. The reversal of 20953704 is 40735902.

It is a super-2 number, since 2×20953704² = 878115422639232, which contains 22 as substring.

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, 20649 + ... + 21639.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^20953704 is an apocalyptic number.

20953704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20953704 is an abundant number, since it is smaller than the sum of its proper divisors (31542936).

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

20953704 is a wasteful number, since it uses less digits than its factorization.

20953704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20953704 is about 4577.5216001675. The cubic root of 20953704 is about 275.6895269556.

The spelling of 20953704 in words is "twenty million, nine hundred fifty-three thousand, seven hundred four".