72207733 has 16 divisors (see below), whose sum is σ = 82223680. Its totient is φ = 62861184.

The previous prime is 72207719. The next prime is 72207739. The reversal of 72207733 is 33770227.

It is a cyclic number.

It is not a de Polignac number, because 72207733 - 2⁵ = 72207701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72207695 and 72207704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72207739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69385 + ... + 70417.

It is an arithmetic number, because the mean of its divisors is an integer number (5138980).

Almost surely, 2^72207733 is an apocalyptic number.

It is an amenable number.

72207733 is a deficient number, since it is larger than the sum of its proper divisors (10015947).

72207733 is a wasteful number, since it uses less digits than its factorization.

72207733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 12348, while the sum is 31.

The square root of 72207733 is about 8497.5133421490. The cubic root of 72207733 is about 416.4164749377.

The spelling of 72207733 in words is "seventy-two million, two hundred seven thousand, seven hundred thirty-three".