80847440 has 40 divisors (see below), whose sum is σ = 188687328. Its totient is φ = 32215680.

The previous prime is 80847433. The next prime is 80847467. The reversal of 80847440 is 4474808.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 80847440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20855 + ... + 24425.

Almost surely, 2^80847440 is an apocalyptic number.

80847440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80847440 is an abundant number, since it is smaller than the sum of its proper divisors (107839888).

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

80847440 is a wasteful number, since it uses less digits than its factorization.

80847440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867 (or 3861 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 80847440 is about 8991.5204498461. The cubic root of 80847440 is about 432.4030588973.

The spelling of 80847440 in words is "eighty million, eight hundred forty-seven thousand, four hundred forty".