20874546 has 48 divisors (see below), whose sum is σ = 56392128. Its totient is φ = 5421600.

The previous prime is 20874509. The next prime is 20874571. The reversal of 20874546 is 64547802.

It is a super-2 number, since 2×20874546² = 871493341412232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20874546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6145 + ... + 8916.

It is an arithmetic number, because the mean of its divisors is an integer number (1174836).

Almost surely, 2^20874546 is an apocalyptic number.

20874546 is an abundant number, since it is smaller than the sum of its proper divisors (35517582).

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

20874546 is a wasteful number, since it uses less digits than its factorization.

20874546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15087 (or 15084 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 20874546 is about 4568.8670368046. The cubic root of 20874546 is about 275.3419261989.

The spelling of 20874546 in words is "twenty million, eight hundred seventy-four thousand, five hundred forty-six".