20474464 has 24 divisors (see below), whose sum is σ = 41700960. Its totient is φ = 9883776.

The previous prime is 20474459. The next prime is 20474473. The reversal of 20474464 is 46447402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10104 + ... + 11959.

It is an arithmetic number, because the mean of its divisors is an integer number (1737540).

Almost surely, 2^20474464 is an apocalyptic number.

It is an amenable number.

20474464 is an abundant number, since it is smaller than the sum of its proper divisors (21226496).

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

20474464 is a wasteful number, since it uses less digits than its factorization.

20474464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22102 (or 22094 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 20474464 is about 4524.8717108886. The cubic root of 20474464 is about 273.5714970934.

The spelling of 20474464 in words is "twenty million, four hundred seventy-four thousand, four hundred sixty-four".