20673608 has 16 divisors (see below), whose sum is σ = 39588480. Its totient is φ = 10116688.

The previous prime is 20673599. The next prime is 20673613. The reversal of 20673608 is 80637602.

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, 27116 + ... + 27867.

It is an arithmetic number, because the mean of its divisors is an integer number (2474280).

Almost surely, 2^20673608 is an apocalyptic number.

It is an amenable number.

20673608 is a deficient number, since it is larger than the sum of its proper divisors (18914872).

20673608 is a wasteful number, since it uses less digits than its factorization.

20673608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55036 (or 55032 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 20673608 is about 4546.8239464488. The cubic root of 20673608 is about 274.4555973669.

The spelling of 20673608 in words is "twenty million, six hundred seventy-three thousand, six hundred eight".