80239140 has 96 divisors (see below), whose sum is σ = 251664000. Its totient is φ = 21223296.

The previous prime is 80239139. The next prime is 80239141. The reversal of 80239140 is 4193208.

It is an interprime number because it is at equal distance from previous prime (80239139) and next prime (80239141).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80239141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74526 + ... + 75594.

It is an arithmetic number, because the mean of its divisors is an integer number (2621500).

Almost surely, 2^80239140 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 80239140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125832000).

80239140 is an abundant number, since it is smaller than the sum of its proper divisors (171424860).

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

80239140 is a wasteful number, since it uses less digits than its factorization.

80239140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 80239140 is about 8957.6302669847. The cubic root of 80239140 is about 431.3158538374.

The spelling of 80239140 in words is "eighty million, two hundred thirty-nine thousand, one hundred forty".