40804080 has 160 divisors (see below), whose sum is σ = 136759104. Its totient is φ = 10027008.

The previous prime is 40804051. The next prime is 40804087. The reversal of 40804080 is 8040804.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 40804080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40804087) 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, 297772 + ... + 297908.

Almost surely, 2^40804080 is an apocalyptic number.

40804080 is a gapful number since it is divisible by the number (40) 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 40804080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68379552).

40804080 is an abundant number, since it is smaller than the sum of its proper divisors (95955024).

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

40804080 is a wasteful number, since it uses less digits than its factorization.

40804080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 40804080 is about 6387.8071354730. The cubic root of 40804080 is about 344.2715991002.

Adding to 40804080 its reverse (8040804), we get a palindrome (48844884).

The spelling of 40804080 in words is "forty million, eight hundred four thousand, eighty".