80402772 has 12 divisors (see below), whose sum is σ = 187606496. Its totient is φ = 26800920.

The previous prime is 80402771. The next prime is 80402783. The reversal of 80402772 is 27720408.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80402771) 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 3 ways as a sum of consecutive naturals, for example, 3350104 + ... + 3350127.

Almost surely, 2^80402772 is an apocalyptic number.

It is an amenable number.

80402772 is an abundant number, since it is smaller than the sum of its proper divisors (107203724).

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

80402772 is a wasteful number, since it uses less digits than its factorization.

80402772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700238 (or 6700236 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 80402772 is about 8966.7592808104. The cubic root of 80402772 is about 431.6088494754.

The spelling of 80402772 in words is "eighty million, four hundred two thousand, seven hundred seventy-two".