72767432 has 8 divisors (see below), whose sum is σ = 136438950. Its totient is φ = 36383712.

The previous prime is 72767407. The next prime is 72767441. The reversal of 72767432 is 23476727.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 23290276 = 7034^2 + 4826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 4547957 + ... + 4547972.

Almost surely, 2^72767432 is an apocalyptic number.

It is an amenable number.

72767432 is a deficient number, since it is larger than the sum of its proper divisors (63671518).

72767432 is a wasteful number, since it uses less digits than its factorization.

72767432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095935 (or 9095931 counting only the distinct ones).

The product of its digits is 98784, while the sum is 38.

The square root of 72767432 is about 8530.3828753462. The cubic root of 72767432 is about 417.4896207395.

The spelling of 72767432 in words is "seventy-two million, seven hundred sixty-seven thousand, four hundred thirty-two".