72998132 has 12 divisors (see below), whose sum is σ = 127830276. Its totient is φ = 36475200.

The previous prime is 72998129. The next prime is 72998137. The reversal of 72998132 is 23189927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33131536 + 39866596 = 5756^2 + 6314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72998132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72998137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138 + ... + 12270.

It is an arithmetic number, because the mean of its divisors is an integer number (10652523).

Almost surely, 2^72998132 is an apocalyptic number.

It is an amenable number.

72998132 is a deficient number, since it is larger than the sum of its proper divisors (54832144).

72998132 is a wasteful number, since it uses less digits than its factorization.

72998132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938 (or 11936 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 72998132 is about 8543.8944281867. The cubic root of 72998132 is about 417.9303547650.

The spelling of 72998132 in words is "seventy-two million, nine hundred ninety-eight thousand, one hundred thirty-two".