72735402 has 16 divisors (see below), whose sum is σ = 145692000. Its totient is φ = 24208272.

The previous prime is 72735389. The next prime is 72735413. The reversal of 72735402 is 20453727.

It is a self number, because there is not a number n which added to its sum of digits gives 72735402.

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, 4777 + ... + 12972.

It is an arithmetic number, because the mean of its divisors is an integer number (9105750).

Almost surely, 2^72735402 is an apocalyptic number.

72735402 is an abundant number, since it is smaller than the sum of its proper divisors (72956598).

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

72735402 is a wasteful number, since it uses less digits than its factorization.

72735402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 72735402 is about 8528.5052617677. The cubic root of 72735402 is about 417.4283563585.

It can be divided in two parts, 72735 and 402, that added together give a palindrome (73137).

The spelling of 72735402 in words is "seventy-two million, seven hundred thirty-five thousand, four hundred two".