72726751 has 8 divisors (see below), whose sum is σ = 75744000. Its totient is φ = 69743520.

The previous prime is 72726727. The next prime is 72726757. The reversal of 72726751 is 15762727.

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

It is a cyclic number.

It is not a de Polignac number, because 72726751 - 2⁹ = 72726239 is a prime.

It is a super-2 number, since 2×72726751² = 10578360622032002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72726751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72726757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4095 + ... + 12736.

It is an arithmetic number, because the mean of its divisors is an integer number (9468000).

Almost surely, 2^72726751 is an apocalyptic number.

72726751 is a deficient number, since it is larger than the sum of its proper divisors (3017249).

72726751 is a wasteful number, since it uses less digits than its factorization.

72726751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17009.

The product of its digits is 41160, while the sum is 37.

The square root of 72726751 is about 8527.9980651968. The cubic root of 72726751 is about 417.4118063439.

The spelling of 72726751 in words is "seventy-two million, seven hundred twenty-six thousand, seven hundred fifty-one".