80018444 has 24 divisors (see below), whose sum is σ = 152990208. Its totient is φ = 36317840.

The previous prime is 80018423. The next prime is 80018447. The reversal of 80018444 is 44481008.

It is a super-2 number, since 2×80018444² = 12805902760362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80018447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53069 + ... + 54555.

It is an arithmetic number, because the mean of its divisors is an integer number (6374592).

Almost surely, 2^80018444 is an apocalyptic number.

It is an amenable number.

80018444 is a deficient number, since it is larger than the sum of its proper divisors (72971764).

80018444 is a wasteful number, since it uses less digits than its factorization.

80018444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 80018444 is about 8945.3029015232. The cubic root of 80018444 is about 430.9200491231.

The spelling of 80018444 in words is "eighty million, eighteen thousand, four hundred forty-four".