72088730 has 16 divisors (see below), whose sum is σ = 148296960. Its totient is φ = 24716112.

The previous prime is 72088729. The next prime is 72088747. The reversal of 72088730 is 3788027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514850 + ... + 514989.

It is an arithmetic number, because the mean of its divisors is an integer number (9268560).

Almost surely, 2^72088730 is an apocalyptic number.

72088730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72088730 is an abundant number, since it is smaller than the sum of its proper divisors (76208230).

72088730 is a wasteful number, since it uses less digits than its factorization.

72088730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029853.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 72088730 is about 8490.5082297822. The cubic root of 72088730 is about 416.1875887513.

The spelling of 72088730 in words is "seventy-two million, eighty-eight thousand, seven hundred thirty".