20137473 has 12 divisors (see below), whose sum is σ = 30618640. Its totient is φ = 12718296.

The previous prime is 20137441. The next prime is 20137477. The reversal of 20137473 is 37473102.

It is not a de Polignac number, because 20137473 - 2⁵ = 20137441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20137477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58711 + ... + 59052.

Almost surely, 2^20137473 is an apocalyptic number.

It is an amenable number.

20137473 is a deficient number, since it is larger than the sum of its proper divisors (10481167).

20137473 is a wasteful number, since it uses less digits than its factorization.

20137473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117788 (or 117785 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20137473 is about 4487.4795821263. The cubic root of 20137473 is about 272.0622739839.

The spelling of 20137473 in words is "twenty million, one hundred thirty-seven thousand, four hundred seventy-three".