72023859 has 24 divisors (see below), whose sum is σ = 106675712. Its totient is φ = 46811520.

The previous prime is 72023843. The next prime is 72023869. The reversal of 72023859 is 95832027.

It is a happy number.

It is not a de Polignac number, because 72023859 - 2⁴ = 72023843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72023869) 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, 69207 + ... + 70239.

Almost surely, 2^72023859 is an apocalyptic number.

72023859 is a deficient number, since it is larger than the sum of its proper divisors (34651853).

72023859 is a wasteful number, since it uses less digits than its factorization.

72023859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 72023859 is about 8486.6871628451. The cubic root of 72023859 is about 416.0627120539.

The spelling of 72023859 in words is "seventy-two million, twenty-three thousand, eight hundred fifty-nine".