20137704 has 16 divisors (see below), whose sum is σ = 50344320. Its totient is φ = 6712560.

The previous prime is 20137697. The next prime is 20137723. The reversal of 20137704 is 40773102.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 839071 = 20137704 / (2 + 0 + 1 + 3 + 7 + 7 + 0 + 4).

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, 419512 + ... + 419559.

It is an arithmetic number, because the mean of its divisors is an integer number (3146520).

Almost surely, 2^20137704 is an apocalyptic number.

20137704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20137704 is an abundant number, since it is smaller than the sum of its proper divisors (30206616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20137704 is a wasteful number, since it uses less digits than its factorization.

20137704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839080 (or 839076 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20137704 is about 4487.5053203311. The cubic root of 20137704 is about 272.0633142691.

The spelling of 20137704 in words is "twenty million, one hundred thirty-seven thousand, seven hundred four".