72787874 has 8 divisors (see below), whose sum is σ = 111844908. Its totient is φ = 35506240.

The previous prime is 72787861. The next prime is 72787909. The reversal of 72787874 is 47878727.

It can be written as a sum of positive squares in 2 ways, for example, as 66994225 + 5793649 = 8185^2 + 2407^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 443747 + ... + 443910.

Almost surely, 2^72787874 is an apocalyptic number.

72787874 is a deficient number, since it is larger than the sum of its proper divisors (39057034).

72787874 is a wasteful number, since it uses less digits than its factorization.

72787874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887700.

The product of its digits is 1229312, while the sum is 50.

The square root of 72787874 is about 8531.5809789276. The cubic root of 72787874 is about 417.5287111382.

The spelling of 72787874 in words is "seventy-two million, seven hundred eighty-seven thousand, eight hundred seventy-four".