72534237 has 4 divisors (see below), whose sum is σ = 96712320. Its totient is φ = 48356156.

The previous prime is 72534233. The next prime is 72534251. The reversal of 72534237 is 73243527.

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.

It is a cyclic number.

It is not a de Polignac number, because 72534237 - 2² = 72534233 is a prime.

It is a super-2 number, since 2×72534237² = 10522431074344338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72534198 and 72534207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72534233) 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 3 ways as a sum of consecutive naturals, for example, 12089037 + ... + 12089042.

It is an arithmetic number, because the mean of its divisors is an integer number (24178080).

Almost surely, 2^72534237 is an apocalyptic number.

It is an amenable number.

72534237 is a deficient number, since it is larger than the sum of its proper divisors (24178083).

72534237 is a wasteful number, since it uses less digits than its factorization.

72534237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24178082.

The product of its digits is 35280, while the sum is 33.

The square root of 72534237 is about 8516.7034115320. The cubic root of 72534237 is about 417.0431724994.

It can be divided in two parts, 72534 and 237, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 72534237 in words is "seventy-two million, five hundred thirty-four thousand, two hundred thirty-seven".