20670896 has 10 divisors (see below), whose sum is σ = 40049892. Its totient is φ = 10335440.

The previous prime is 20670889. The next prime is 20670911. The reversal of 20670896 is 69807602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645950 + ... + 645981.

Almost surely, 2^20670896 is an apocalyptic number.

It is an amenable number.

20670896 is a deficient number, since it is larger than the sum of its proper divisors (19378996).

20670896 is a wasteful number, since it uses less digits than its factorization.

20670896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291939 (or 1291933 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 20670896 is about 4546.5257065148. The cubic root of 20670896 is about 274.4435956539.

The spelling of 20670896 in words is "twenty million, six hundred seventy thousand, eight hundred ninety-six".