80378844 has 48 divisors (see below), whose sum is σ = 230834688. Its totient is φ = 21198528.

The previous prime is 80378843. The next prime is 80378861. The reversal of 80378844 is 44887308.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 80378796 and 80378805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80378843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35712 + ... + 37895.

It is an arithmetic number, because the mean of its divisors is an integer number (4809056).

Almost surely, 2^80378844 is an apocalyptic number.

80378844 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80378844 is an abundant number, since it is smaller than the sum of its proper divisors (150455844).

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

80378844 is a wasteful number, since it uses less digits than its factorization.

80378844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73634 (or 73632 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 80378844 is about 8965.4249202143. The cubic root of 80378844 is about 431.5660293878.

The spelling of 80378844 in words is "eighty million, three hundred seventy-eight thousand, eight hundred forty-four".