20694924 has 18 divisors (see below), whose sum is σ = 52312260. Its totient is φ = 6898296.

The previous prime is 20694901. The next prime is 20694937. The reversal of 20694924 is 42949602.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 574859 = 20694924 / (2 + 0 + 6 + 9 + 4 + 9 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287394 + ... + 287465.

Almost surely, 2^20694924 is an apocalyptic number.

It is an amenable number.

20694924 is an abundant number, since it is smaller than the sum of its proper divisors (31617336).

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

20694924 is a wasteful number, since it uses less digits than its factorization.

20694924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574869 (or 574864 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20694924 is about 4549.1673963485. The cubic root of 20694924 is about 274.5498928888.

The spelling of 20694924 in words is "twenty million, six hundred ninety-four thousand, nine hundred twenty-four".