72292957 has 4 divisors (see below), whose sum is σ = 78865056. Its totient is φ = 65720860.

The previous prime is 72292949. The next prime is 72292999. The reversal of 72292957 is 75929227.

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: 75929227 = 11 ⋅6902657.

It is a cyclic number.

It is not a de Polignac number, because 72292957 - 2³ = 72292949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72292057) 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, 3286033 + ... + 3286054.

It is an arithmetic number, because the mean of its divisors is an integer number (19716264).

Almost surely, 2^72292957 is an apocalyptic number.

It is an amenable number.

72292957 is a deficient number, since it is larger than the sum of its proper divisors (6572099).

72292957 is a wasteful number, since it uses less digits than its factorization.

72292957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572098.

The product of its digits is 158760, while the sum is 43.

The square root of 72292957 is about 8502.5265068684. The cubic root of 72292957 is about 416.5802372909.

The spelling of 72292957 in words is "seventy-two million, two hundred ninety-two thousand, nine hundred fifty-seven".