80401916 has 36 divisors (see below), whose sum is σ = 164736432. Its totient is φ = 33634944.

The previous prime is 80401907. The next prime is 80401921. The reversal of 80401916 is 61910408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50996 + ... + 52548.

It is an arithmetic number, because the mean of its divisors is an integer number (4576012).

Almost surely, 2^80401916 is an apocalyptic number.

80401916 is a gapful number since it is divisible by the number (86) 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 80401916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82368216).

80401916 is an abundant number, since it is smaller than the sum of its proper divisors (84334516).

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

80401916 is a wasteful number, since it uses less digits than its factorization.

80401916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 80401916 is about 8966.7115488344. The cubic root of 80401916 is about 431.6073177766.

It can be divided in two parts, 80401 and 916, that multiplied together give a triangular number (73647316 = T₁₂₁₃₆).

The spelling of 80401916 in words is "eighty million, four hundred one thousand, nine hundred sixteen".