72743336 has 16 divisors (see below), whose sum is σ = 136928340. Its totient is φ = 36229120.

The previous prime is 72743317. The next prime is 72743351. The reversal of 72743336 is 63334727.

It can be written as a sum of positive squares in 2 ways, for example, as 53436100 + 19307236 = 7310^2 + 4394^2 .

It is a super-3 number, since 3×72743336³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72743296 and 72743305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15635 + ... + 19746.

Almost surely, 2^72743336 is an apocalyptic number.

It is an amenable number.

72743336 is a deficient number, since it is larger than the sum of its proper divisors (64185004).

72743336 is a wasteful number, since it uses less digits than its factorization.

72743336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35644 (or 35640 counting only the distinct ones).

The product of its digits is 63504, while the sum is 35.

The square root of 72743336 is about 8528.9703950711. The cubic root of 72743336 is about 417.4435335444.

The spelling of 72743336 in words is "seventy-two million, seven hundred forty-three thousand, three hundred thirty-six".