38456257 has 4 divisors (see below), whose sum is σ = 43950016. Its totient is φ = 32962500.

The previous prime is 38456251. The next prime is 38456269. The reversal of 38456257 is 75265483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75265483 = 4663 ⋅16141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38456257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38456251) 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, 2746869 + ... + 2746882.

It is an arithmetic number, because the mean of its divisors is an integer number (10987504).

Almost surely, 2^38456257 is an apocalyptic number.

It is an amenable number.

38456257 is a deficient number, since it is larger than the sum of its proper divisors (5493759).

38456257 is an equidigital number, since it uses as much as digits as its factorization.

38456257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493758.

The product of its digits is 201600, while the sum is 40.

The square root of 38456257 is about 6201.3109097996. The cubic root of 38456257 is about 337.5377391726.

The spelling of 38456257 in words is "thirty-eight million, four hundred fifty-six thousand, two hundred fifty-seven".