72805802 has 8 divisors (see below), whose sum is σ = 109812612. Its totient is φ = 36201600.

The previous prime is 72805801. The next prime is 72805807. The reversal of 72805802 is 20850827.

It can be written as a sum of positive squares in 2 ways, for example, as 70375321 + 2430481 = 8389^2 + 1559^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72805801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100199 + ... + 100922.

Almost surely, 2^72805802 is an apocalyptic number.

72805802 is a deficient number, since it is larger than the sum of its proper divisors (37006810).

72805802 is a wasteful number, since it uses less digits than its factorization.

72805802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201304.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 72805802 is about 8532.6315987508. The cubic root of 72805802 is about 417.5629880941.

The spelling of 72805802 in words is "seventy-two million, eight hundred five thousand, eight hundred two".