80851772 has 12 divisors (see below), whose sum is σ = 142126656. Its totient is φ = 40244160.

The previous prime is 80851769. The next prime is 80851777. The reversal of 80851772 is 27715808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80851777) 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, 44429 + ... + 46212.

It is an arithmetic number, because the mean of its divisors is an integer number (11843888).

Almost surely, 2^80851772 is an apocalyptic number.

It is an amenable number.

80851772 is a deficient number, since it is larger than the sum of its proper divisors (61274884).

80851772 is a wasteful number, since it uses less digits than its factorization.

80851772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90868 (or 90866 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 80851772 is about 8991.7613402492. The cubic root of 80851772 is about 432.4107818241.

The spelling of 80851772 in words is "eighty million, eight hundred fifty-one thousand, seven hundred seventy-two".