80084720 has 40 divisors (see below), whose sum is σ = 187581744. Its totient is φ = 31795712.

The previous prime is 80084707. The next prime is 80084729. The reversal of 80084720 is 2748008.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80084729) 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, 7307 + ... + 14613.

Almost surely, 2^80084720 is an apocalyptic number.

80084720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

80084720 is the 7307-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80084720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93790872).

80084720 is an abundant number, since it is smaller than the sum of its proper divisors (107497024).

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

80084720 is a wasteful number, since it uses less digits than its factorization.

80084720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457 (or 7451 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 80084720 is about 8949.0066487851. The cubic root of 80084720 is about 431.0389874347.

The spelling of 80084720 in words is "eighty million, eighty-four thousand, seven hundred twenty".