20474364 has 24 divisors (see below), whose sum is σ = 48885760. Its totient is φ = 6665904.

The previous prime is 20474359. The next prime is 20474369. The reversal of 20474364 is 46347402.

20474364 = T₁₁₂ + T₁₁₃ + ... + T₄₉₈.

It is an interprime number because it is at equal distance from previous prime (20474359) and next prime (20474369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20474369) 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, 19324 + ... + 20355.

Almost surely, 2^20474364 is an apocalyptic number.

It is an amenable number.

20474364 is an abundant number, since it is smaller than the sum of its proper divisors (28411396).

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

20474364 is a wasteful number, since it uses less digits than its factorization.

20474364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39729 (or 39727 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 20474364 is about 4524.8606608381. The cubic root of 20474364 is about 273.5710517062.

The spelling of 20474364 in words is "twenty million, four hundred seventy-four thousand, three hundred sixty-four".