80919672 has 64 divisors (see below), whose sum is σ = 212367360. Its totient is φ = 25660800.

The previous prime is 80919667. The next prime is 80919673. The reversal of 80919672 is 27691908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80919673) 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, 44493 + ... + 46275.

It is an arithmetic number, because the mean of its divisors is an integer number (3318240).

Almost surely, 2^80919672 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 80919672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106183680).

80919672 is an abundant number, since it is smaller than the sum of its proper divisors (131447688).

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

80919672 is a wasteful number, since it uses less digits than its factorization.

80919672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 80919672 is about 8995.5362263736. The cubic root of 80919672 is about 432.5317953615.

The spelling of 80919672 in words is "eighty million, nine hundred nineteen thousand, six hundred seventy-two".