80672040 has 96 divisors (see below), whose sum is σ = 273611520. Its totient is φ = 20575104.

The previous prime is 80671993. The next prime is 80672047. The reversal of 80672040 is 4027608.

It is a junction number, because it is equal to n+sod(n) for n = 80671995 and 80672013.

It is not an unprimeable number, because it can be changed into a prime (80672047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3409 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (2850120).

Almost surely, 2^80672040 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 80672040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136805760).

80672040 is an abundant number, since it is smaller than the sum of its proper divisors (192939480).

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

80672040 is a wasteful number, since it uses less digits than its factorization.

80672040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9783 (or 9776 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 80672040 is about 8981.7615198802. The cubic root of 80672040 is about 432.0901303713.

Adding to 80672040 its reverse (4027608), we get a palindrome (84699648).

The spelling of 80672040 in words is "eighty million, six hundred seventy-two thousand, forty".