72298332 has 36 divisors (see below), whose sum is σ = 189525336. Its totient is φ = 24099120.

The previous prime is 72298321. The next prime is 72298339. The reversal of 72298332 is 23389227.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72298339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36219 + ... + 38162.

Almost surely, 2^72298332 is an apocalyptic number.

It is an amenable number.

72298332 is an abundant number, since it is smaller than the sum of its proper divisors (117227004).

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

72298332 is a wasteful number, since it uses less digits than its factorization.

72298332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74400 (or 74386 counting only the distinct ones).

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

The square root of 72298332 is about 8502.8425835129. The cubic root of 72298332 is about 416.5905613178.

The spelling of 72298332 in words is "seventy-two million, two hundred ninety-eight thousand, three hundred thirty-two".