72576023 has 4 divisors (see below), whose sum is σ = 78158808. Its totient is φ = 66993240.

The previous prime is 72576001. The next prime is 72576041. The reversal of 72576023 is 32067527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32067527 = 1093 ⋅29339.

It is a cyclic number.

It is not a de Polignac number, because 72576023 - 2¹⁴ = 72559639 is a prime.

It is a super-2 number, since 2×72576023² = 10534558228993058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72576073) 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, 2791373 + ... + 2791398.

It is an arithmetic number, because the mean of its divisors is an integer number (19539702).

Almost surely, 2^72576023 is an apocalyptic number.

72576023 is a deficient number, since it is larger than the sum of its proper divisors (5582785).

72576023 is a wasteful number, since it uses less digits than its factorization.

72576023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582784.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 72576023 is about 8519.1562375625. The cubic root of 72576023 is about 417.1232414498.

The spelling of 72576023 in words is "seventy-two million, five hundred seventy-six thousand, twenty-three".