72374257 has 8 divisors (see below), whose sum is σ = 75229056. Its totient is φ = 69566832.

The previous prime is 72374209. The next prime is 72374273. The reversal of 72374257 is 75247327.

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 72374257 - 2⁷ = 72374129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72374207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8713 + ... + 14854.

It is an arithmetic number, because the mean of its divisors is an integer number (9403632).

Almost surely, 2^72374257 is an apocalyptic number.

It is an amenable number.

72374257 is a deficient number, since it is larger than the sum of its proper divisors (2854799).

72374257 is a wasteful number, since it uses less digits than its factorization.

72374257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23687.

The product of its digits is 82320, while the sum is 37.

The square root of 72374257 is about 8507.3060953512. The cubic root of 72374257 is about 416.7363395668.

The spelling of 72374257 in words is "seventy-two million, three hundred seventy-four thousand, two hundred fifty-seven".