38742431 has 16 divisors (see below), whose sum is σ = 47889408. Its totient is φ = 30520800.

The previous prime is 38742427. The next prime is 38742433. The reversal of 38742431 is 13424783.

It is a cyclic number.

It is not a de Polignac number, because 38742431 - 2² = 38742427 is a prime.

It is a super-2 number, since 2×38742431² = 3001951919579522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38742433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23876 + ... + 25446.

It is an arithmetic number, because the mean of its divisors is an integer number (2993088).

Almost surely, 2^38742431 is an apocalyptic number.

38742431 is a deficient number, since it is larger than the sum of its proper divisors (9146977).

38742431 is a wasteful number, since it uses less digits than its factorization.

38742431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862.

The product of its digits is 16128, while the sum is 32.

The square root of 38742431 is about 6224.3418125935. The cubic root of 38742431 is about 338.3729383831.

The spelling of 38742431 in words is "thirty-eight million, seven hundred forty-two thousand, four hundred thirty-one".