80763920 has 80 divisors (see below), whose sum is σ = 194451840. Its totient is φ = 31180800.

The previous prime is 80763911. The next prime is 80763937. The reversal of 80763920 is 2936708.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335000 + ... + 335240.

It is an arithmetic number, because the mean of its divisors is an integer number (2430648).

Almost surely, 2^80763920 is an apocalyptic number.

80763920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80763920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97225920).

80763920 is an abundant number, since it is smaller than the sum of its proper divisors (113687920).

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

80763920 is a wasteful number, since it uses less digits than its factorization.

80763920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 80763920 is about 8986.8748739481. The cubic root of 80763920 is about 432.2541086165.

The spelling of 80763920 in words is "eighty million, seven hundred sixty-three thousand, nine hundred twenty".