72835812 has 36 divisors (see below), whose sum is σ = 210415296. Its totient is φ = 20810160.

The previous prime is 72835811. The next prime is 72835817. The reversal of 72835812 is 21853827.

72835812 is a `hidden beast` number, since 72 + 8 + 3 + 581 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72835811) 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 11 ways as a sum of consecutive naturals, for example, 144264 + ... + 144767.

Almost surely, 2^72835812 is an apocalyptic number.

It is an amenable number.

72835812 is an abundant number, since it is smaller than the sum of its proper divisors (137579484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72835812 is a wasteful number, since it uses less digits than its factorization.

72835812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289048 (or 289043 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 72835812 is about 8534.3899606240. The cubic root of 72835812 is about 417.6203523132.

The spelling of 72835812 in words is "seventy-two million, eight hundred thirty-five thousand, eight hundred twelve".