72101332 has 6 divisors (see below), whose sum is σ = 126177338. Its totient is φ = 36050664.

The previous prime is 72101321. The next prime is 72101357. The reversal of 72101332 is 23310127.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 3111696 = 8306^2 + 1764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012663 + ... + 9012670.

Almost surely, 2^72101332 is an apocalyptic number.

It is an amenable number.

72101332 is a deficient number, since it is larger than the sum of its proper divisors (54076006).

72101332 is a wasteful number, since it uses less digits than its factorization.

72101332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025337 (or 18025335 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 72101332 is about 8491.2503201825. The cubic root of 72101332 is about 416.2118389145.

Adding to 72101332 its reverse (23310127), we get a palindrome (95411459).

The spelling of 72101332 in words is "seventy-two million, one hundred one thousand, three hundred thirty-two".