20357704 has 16 divisors (see below), whose sum is σ = 40416300. Its totient is φ = 9580032.

The previous prime is 20357693. The next prime is 20357717. The reversal of 20357704 is 40775302.

It can be written as a sum of positive squares in 2 ways, for example, as 19377604 + 980100 = 4402^2 + 990^2 .

It is a super-2 number, since 2×20357704² = 828872224303232, which contains 22 as substring.

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, 74709 + ... + 74980.

Almost surely, 2^20357704 is an apocalyptic number.

It is an amenable number.

20357704 is a deficient number, since it is larger than the sum of its proper divisors (20058596).

20357704 is a wasteful number, since it uses less digits than its factorization.

20357704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149712 (or 149708 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 20357704 is about 4511.9512408713. The cubic root of 20357704 is about 273.0504721362.

The spelling of 20357704 in words is "twenty million, three hundred fifty-seven thousand, seven hundred four".