80734040 has 48 divisors (see below), whose sum is σ = 191749680. Its totient is φ = 30588480.

The previous prime is 80734039. The next prime is 80734081. The reversal of 80734040 is 4043708.

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, 11645 + ... + 17235.

It is an arithmetic number, because the mean of its divisors is an integer number (3994785).

Almost surely, 2^80734040 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 80734040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95874840).

80734040 is an abundant number, since it is smaller than the sum of its proper divisors (111015640).

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

80734040 is a wasteful number, since it uses less digits than its factorization.

80734040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640 (or 5617 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 80734040 is about 8985.2122957669. The cubic root of 80734040 is about 432.2007954296.

Adding to 80734040 its reverse (4043708), we get a palindrome (84777748).

The spelling of 80734040 in words is "eighty million, seven hundred thirty-four thousand, forty".