72774339 has 8 divisors (see below), whose sum is σ = 105853632. Its totient is φ = 44105640.

The previous prime is 72774319. The next prime is 72774349. The reversal of 72774339 is 93347727.

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

It is a de Polignac number, because none of the positive numbers 2^k-72774339 is a prime.

It is a super-2 number, since 2×72774339² = 10592208833773842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72774339.

It is not an unprimeable number, because it can be changed into a prime (72774319) 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 7 ways as a sum of consecutive naturals, for example, 1102609 + ... + 1102674.

It is an arithmetic number, because the mean of its divisors is an integer number (13231704).

Almost surely, 2^72774339 is an apocalyptic number.

72774339 is a deficient number, since it is larger than the sum of its proper divisors (33079293).

72774339 is a wasteful number, since it uses less digits than its factorization.

72774339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205297.

The product of its digits is 222264, while the sum is 42.

The square root of 72774339 is about 8530.7877127496. The cubic root of 72774339 is about 417.5028295313.

The spelling of 72774339 in words is "seventy-two million, seven hundred seventy-four thousand, three hundred thirty-nine".