20374631 has 8 divisors (see below), whose sum is σ = 21852720. Its totient is φ = 18937152.

The previous prime is 20374609. The next prime is 20374637. The reversal of 20374631 is 13647302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20374631 - 2²² = 16180327 is a prime.

It is a super-2 number, since 2×20374631² = 830251176772322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20374631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9110 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (2731590).

Almost surely, 2^20374631 is an apocalyptic number.

20374631 is a deficient number, since it is larger than the sum of its proper divisors (1478089).

20374631 is a wasteful number, since it uses less digits than its factorization.

20374631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20305.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20374631 is about 4513.8266470922. The cubic root of 20374631 is about 273.1261297337.

The spelling of 20374631 in words is "twenty million, three hundred seventy-four thousand, six hundred thirty-one".