72389034 has 12 divisors (see below), whose sum is σ = 156842946. Its totient is φ = 24129672.

The previous prime is 72389033. The next prime is 72389041. The reversal of 72389034 is 43098327.

It can be written as a sum of positive squares in only one way, i.e., 39727809 + 32661225 = 6303^2 + 5715^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72389034.

It is not an unprimeable number, because it can be changed into a prime (72389033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2010789 + ... + 2010824.

Almost surely, 2^72389034 is an apocalyptic number.

72389034 is an abundant number, since it is smaller than the sum of its proper divisors (84453912).

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

72389034 is a wasteful number, since it uses less digits than its factorization.

72389034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021621 (or 4021618 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 72389034 is about 8508.1745398176. The cubic root of 72389034 is about 416.7646999907.

The spelling of 72389034 in words is "seventy-two million, three hundred eighty-nine thousand, thirty-four".