72534023 has 4 divisors (see below), whose sum is σ = 74494440. Its totient is φ = 70573608.

The previous prime is 72534013. The next prime is 72534029. The reversal of 72534023 is 32043527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72534023 - 2⁸ = 72533767 is a prime.

It is a super-2 number, since 2×72534023² = 10522368985129058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72533983 and 72534001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72534029) 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, 980153 + ... + 980226.

It is an arithmetic number, because the mean of its divisors is an integer number (18623610).

Almost surely, 2^72534023 is an apocalyptic number.

72534023 is a deficient number, since it is larger than the sum of its proper divisors (1960417).

72534023 is a wasteful number, since it uses less digits than its factorization.

72534023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960416.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 72534023 is about 8516.6908479761. The cubic root of 72534023 is about 417.0427623605.

The spelling of 72534023 in words is "seventy-two million, five hundred thirty-four thousand, twenty-three".