72789650 has 24 divisors (see below), whose sum is σ = 135637524. Its totient is φ = 29062400.

The previous prime is 72789569. The next prime is 72789667. The reversal of 72789650 is 5698727.

It can be written as a sum of positive squares in 6 ways, for example, as 15832441 + 56957209 = 3979^2 + 7547^2 .

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

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 37094 + ... + 39006.

Almost surely, 2^72789650 is an apocalyptic number.

72789650 is a deficient number, since it is larger than the sum of its proper divisors (62847874).

72789650 is a wasteful number, since it uses less digits than its factorization.

72789650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 72789650 is about 8531.6850621668. The cubic root of 72789650 is about 417.5321069646.

The spelling of 72789650 in words is "seventy-two million, seven hundred eighty-nine thousand, six hundred fifty".