20315704 has 8 divisors (see below), whose sum is σ = 38091960. Its totient is φ = 10157848.

The previous prime is 20315699. The next prime is 20315707. The reversal of 20315704 is 40751302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269724 + ... + 1269739.

It is an arithmetic number, because the mean of its divisors is an integer number (4761495).

Almost surely, 2^20315704 is an apocalyptic number.

It is an amenable number.

20315704 is a deficient number, since it is larger than the sum of its proper divisors (17776256).

20315704 is a wasteful number, since it uses less digits than its factorization.

20315704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539469 (or 2539465 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20315704 is about 4507.2945322000. The cubic root of 20315704 is about 272.8625659507.

The spelling of 20315704 in words is "twenty million, three hundred fifteen thousand, seven hundred four".