72372861 has 24 divisors (see below), whose sum is σ = 114323040. Its totient is φ = 43754400.

The previous prime is 72372841. The next prime is 72372871. The reversal of 72372861 is 16827327.

It is not a de Polignac number, because 72372861 - 2⁷ = 72372733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72372841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60691 + ... + 61871.

It is an arithmetic number, because the mean of its divisors is an integer number (4763460).

Almost surely, 2^72372861 is an apocalyptic number.

It is an amenable number.

72372861 is a deficient number, since it is larger than the sum of its proper divisors (41950179).

72372861 is a wasteful number, since it uses less digits than its factorization.

72372861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1814 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 72372861 is about 8507.2240478313. The cubic root of 72372861 is about 416.7336601257.

The spelling of 72372861 in words is "seventy-two million, three hundred seventy-two thousand, eight hundred sixty-one".