80720802 has 48 divisors (see below), whose sum is σ = 179532288. Its totient is φ = 26201760.

The previous prime is 80720789. The next prime is 80720803. The reversal of 80720802 is 20802708.

It is not an unprimeable number, because it can be changed into a prime (80720803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181993 + ... + 182435.

It is an arithmetic number, because the mean of its divisors is an integer number (3740256).

Almost surely, 2^80720802 is an apocalyptic number.

80720802 is an abundant number, since it is smaller than the sum of its proper divisors (98811486).

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

80720802 is a wasteful number, since it uses less digits than its factorization.

80720802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 80720802 is about 8984.4756107410. The cubic root of 80720802 is about 432.1771714131.

It can be divided in two parts, 807 and 20802, that added together give a square (21609 = 147²).

The spelling of 80720802 in words is "eighty million, seven hundred twenty thousand, eight hundred two".