80447040 has 112 divisors (see below), whose sum is σ = 283829760. Its totient is φ = 21450240.

The previous prime is 80447021. The next prime is 80447041. The reversal of 80447040 is 4074408.

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

It is a junction number, because it is equal to n+sod(n) for n = 80446995 and 80447013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80447041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3985 + ... + 13295.

Almost surely, 2^80447040 is an apocalyptic number.

80447040 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 80447040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141914880).

80447040 is an abundant number, since it is smaller than the sum of its proper divisors (203382720).

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

80447040 is a wasteful number, since it uses less digits than its factorization.

80447040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9337 (or 9321 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 80447040 is about 8969.2273914758. The cubic root of 80447040 is about 431.6880463928.

The spelling of 80447040 in words is "eighty million, four hundred forty-seven thousand, forty".