20496931 has 8 divisors (see below), whose sum is σ = 25227104. Its totient is φ = 16217280.

The previous prime is 20496923. The next prime is 20496937. The reversal of 20496931 is 13969402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20496931 - 2³ = 20496923 is a prime.

It is a super-2 number, since 2×20496931² = 840248360837522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20496937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112530 + ... + 112711.

It is an arithmetic number, because the mean of its divisors is an integer number (3153388).

Almost surely, 2^20496931 is an apocalyptic number.

20496931 is a deficient number, since it is larger than the sum of its proper divisors (4730173).

20496931 is a wasteful number, since it uses less digits than its factorization.

20496931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225261.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20496931 is about 4527.3536420297. The cubic root of 20496931 is about 273.6715255001.

The spelling of 20496931 in words is "twenty million, four hundred ninety-six thousand, nine hundred thirty-one".