80199840 has 96 divisors (see below), whose sum is σ = 288731520. Its totient is φ = 18330624.

The previous prime is 80199809. The next prime is 80199853. The reversal of 80199840 is 4899108.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8575 + ... + 15294.

It is an arithmetic number, because the mean of its divisors is an integer number (3007620).

Almost surely, 2^80199840 is an apocalyptic number.

80199840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80199840 is an abundant number, since it is smaller than the sum of its proper divisors (208531680).

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

80199840 is a wasteful number, since it uses less digits than its factorization.

80199840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23894 (or 23886 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 80199840 is about 8955.4363377783. The cubic root of 80199840 is about 431.2454248622.

The spelling of 80199840 in words is "eighty million, one hundred ninety-nine thousand, eight hundred forty".