72733357 has 4 divisors (see below), whose sum is σ = 73413216. Its totient is φ = 72053500.

The previous prime is 72733333. The next prime is 72733369. The reversal of 72733357 is 75333727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72733357 - 2¹⁹ = 72209069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72731357) 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, 339769 + ... + 339982.

It is an arithmetic number, because the mean of its divisors is an integer number (18353304).

Almost surely, 2^72733357 is an apocalyptic number.

It is an amenable number.

72733357 is a deficient number, since it is larger than the sum of its proper divisors (679859).

72733357 is a wasteful number, since it uses less digits than its factorization.

72733357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679858.

The product of its digits is 92610, while the sum is 37.

The square root of 72733357 is about 8528.3853688726. The cubic root of 72733357 is about 417.4244442379.

The spelling of 72733357 in words is "seventy-two million, seven hundred thirty-three thousand, three hundred fifty-seven".