80198780 has 12 divisors (see below), whose sum is σ = 168417480. Its totient is φ = 32079504.

The previous prime is 80198761. The next prime is 80198801. The reversal of 80198780 is 8789108.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004950 + ... + 2004989.

It is an arithmetic number, because the mean of its divisors is an integer number (14034790).

Almost surely, 2^80198780 is an apocalyptic number.

It is an amenable number.

80198780 is an abundant number, since it is smaller than the sum of its proper divisors (88218700).

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

80198780 is a wasteful number, since it uses less digits than its factorization.

80198780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009948 (or 4009946 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 80198780 is about 8955.3771556535. The cubic root of 80198780 is about 431.2435249325.

The spelling of 80198780 in words is "eighty million, one hundred ninety-eight thousand, seven hundred eighty".