72601322 has 8 divisors (see below), whose sum is σ = 115308036. Its totient is φ = 34165312.

The previous prime is 72601307. The next prime is 72601327. The reversal of 72601322 is 22310627.

It can be written as a sum of positive squares in 2 ways, for example, as 66406201 + 6195121 = 8149^2 + 2489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72601322² = 10541903912295368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72601327) 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, 1067633 + ... + 1067700.

Almost surely, 2^72601322 is an apocalyptic number.

72601322 is a deficient number, since it is larger than the sum of its proper divisors (42706714).

72601322 is a wasteful number, since it uses less digits than its factorization.

72601322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135352.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 72601322 is about 8520.6409383332. The cubic root of 72601322 is about 417.1717036209.

Adding to 72601322 its reverse (22310627), we get a palindrome (94911949).

The spelling of 72601322 in words is "seventy-two million, six hundred one thousand, three hundred twenty-two".