38672431 has 4 divisors (see below), whose sum is σ = 44197072. Its totient is φ = 33147792.

The previous prime is 38672423. The next prime is 38672489. The reversal of 38672431 is 13427683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38672431 - 2³ = 38672423 is a prime.

It is a super-2 number, since 2×38672431² = 2991113838899522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38672411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762310 + ... + 2762323.

It is an arithmetic number, because the mean of its divisors is an integer number (11049268).

Almost surely, 2^38672431 is an apocalyptic number.

38672431 is a deficient number, since it is larger than the sum of its proper divisors (5524641).

38672431 is an equidigital number, since it uses as much as digits as its factorization.

38672431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524640.

The product of its digits is 24192, while the sum is 34.

The square root of 38672431 is about 6218.7161858377. The cubic root of 38672431 is about 338.1690242697.

The spelling of 38672431 in words is "thirty-eight million, six hundred seventy-two thousand, four hundred thirty-one".