72834856 has 8 divisors (see below), whose sum is σ = 136565370. Its totient is φ = 36417424.

The previous prime is 72834823. The next prime is 72834857. The reversal of 72834856 is 65843827.

It can be written as a sum of positive squares in only one way, i.e., 54908100 + 17926756 = 7410^2 + 4234^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72834857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4552171 + ... + 4552186.

Almost surely, 2^72834856 is an apocalyptic number.

It is an amenable number.

72834856 is a deficient number, since it is larger than the sum of its proper divisors (63730514).

72834856 is a wasteful number, since it uses less digits than its factorization.

72834856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104363 (or 9104359 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 72834856 is about 8534.3339517504. Note that the first 3 decimals coincide. The cubic root of 72834856 is about 417.6185251589.

The spelling of 72834856 in words is "seventy-two million, eight hundred thirty-four thousand, eight hundred fifty-six".