80722402 has 4 divisors (see below), whose sum is σ = 121083606. Its totient is φ = 40361200.

The previous prime is 80722391. The next prime is 80722403. The reversal of 80722402 is 20422708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69372241 + 11350161 = 8329^2 + 3369^2 .

It is a super-2 number, since 2×80722402² = 13032212369299208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80722403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20180599 + ... + 20180602.

Almost surely, 2^80722402 is an apocalyptic number.

80722402 is a deficient number, since it is larger than the sum of its proper divisors (40361204).

80722402 is a wasteful number, since it uses less digits than its factorization.

80722402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40361203.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 80722402 is about 8984.5646527809. The cubic root of 80722402 is about 432.1800268476.

The spelling of 80722402 in words is "eighty million, seven hundred twenty-two thousand, four hundred two".