80944920 has 320 divisors, whose sum is σ = 321995520. Its totient is φ = 17853696.

The previous prime is 80944891. The next prime is 80944931. The reversal of 80944920 is 2944908.

It is a happy number.

80944920 is a `hidden beast` number, since 80 + 94 + 492 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 975199 + ... + 975281.

It is an arithmetic number, because the mean of its divisors is an integer number (1006236).

Almost surely, 2^80944920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80944920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160997760).

80944920 is an abundant number, since it is smaller than the sum of its proper divisors (241050600).

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

80944920 is a wasteful number, since it uses less digits than its factorization.

80944920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 80944920 is about 8996.9394796231. The cubic root of 80944920 is about 432.5767758832.

The spelling of 80944920 in words is "eighty million, nine hundred forty-four thousand, nine hundred twenty".