72722511 has 12 divisors (see below), whose sum is σ = 106008760. Its totient is φ = 48036240.

The previous prime is 72722491. The next prime is 72722521. The reversal of 72722511 is 11522727.

It is not a de Polignac number, because 72722511 - 2¹⁰ = 72721487 is a prime.

It is a super-2 number, since 2×72722511² = 10577127212290242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72722521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36085 + ... + 38046.

Almost surely, 2^72722511 is an apocalyptic number.

72722511 is a deficient number, since it is larger than the sum of its proper divisors (33286249).

72722511 is a wasteful number, since it uses less digits than its factorization.

72722511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74246 (or 74243 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 72722511 is about 8527.7494686465. The cubic root of 72722511 is about 417.4036944253.

The spelling of 72722511 in words is "seventy-two million, seven hundred twenty-two thousand, five hundred eleven".