80740240 has 120 divisors (see below), whose sum is σ = 223914240. Its totient is φ = 26982144.

The previous prime is 80740229. The next prime is 80740243. The reversal of 80740240 is 4204708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80740243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168321 + ... + 168799.

It is an arithmetic number, because the mean of its divisors is an integer number (1865952).

Almost surely, 2^80740240 is an apocalyptic number.

80740240 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 80740240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111957120).

80740240 is an abundant number, since it is smaller than the sum of its proper divisors (143174000).

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

80740240 is a wasteful number, since it uses less digits than its factorization.

80740240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 80740240 is about 8985.5573004683. The cubic root of 80740240 is about 432.2118588188.

Adding to 80740240 its reverse (4204708), we get a palindrome (84944948).

The spelling of 80740240 in words is "eighty million, seven hundred forty thousand, two hundred forty".