20545974 has 20 divisors (see below), whose sum is σ = 46038564. Its totient is φ = 6848604.

The previous prime is 20545957. The next prime is 20546023. The reversal of 20545974 is 47954502.

20545974 is a `hidden beast` number, since 20 + 545 + 97 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63252 + ... + 63575.

Almost surely, 2^20545974 is an apocalyptic number.

20545974 is an abundant number, since it is smaller than the sum of its proper divisors (25492590).

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

20545974 is a wasteful number, since it uses less digits than its factorization.

20545974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126841 (or 126832 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 20545974 is about 4532.7667047842. The cubic root of 20545974 is about 273.8896229014.

The spelling of 20545974 in words is "twenty million, five hundred forty-five thousand, nine hundred seventy-four".