20657074 has 16 divisors (see below), whose sum is σ = 32957496. Its totient is φ = 9676800.

The previous prime is 20657069. The next prime is 20657083. The reversal of 20657074 is 47075602.

It can be written as a sum of positive squares in 4 ways, for example, as 16056049 + 4601025 = 4007^2 + 2145^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6934 + ... + 9454.

Almost surely, 2^20657074 is an apocalyptic number.

20657074 is a deficient number, since it is larger than the sum of its proper divisors (12300422).

20657074 is a wasteful number, since it uses less digits than its factorization.

20657074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20657074 is about 4545.0053905359. The cubic root of 20657074 is about 274.3824113170.

The spelling of 20657074 in words is "twenty million, six hundred fifty-seven thousand, seventy-four".