72024390 has 40 divisors (see below), whose sum is σ = 193667760. Its totient is φ = 19206288.

The previous prime is 72024389. The next prime is 72024401. The reversal of 72024390 is 9342027.

It is a Harshad number since it is a multiple of its sum of digits (27).

72024390 is a modest number, since divided by 24390 gives 720 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43650 + ... + 45269.

It is an arithmetic number, because the mean of its divisors is an integer number (4841694).

Almost surely, 2^72024390 is an apocalyptic number.

72024390 is an abundant number, since it is smaller than the sum of its proper divisors (121643370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72024390 is a wasteful number, since it uses less digits than its factorization.

72024390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88938 (or 88929 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 72024390 is about 8486.7184470795. The cubic root of 72024390 is about 416.0637345334.

The spelling of 72024390 in words is "seventy-two million, twenty-four thousand, three hundred ninety".