40480440 has 256 divisors, whose sum is σ = 163537920. Its totient is φ = 7741440.

The previous prime is 40480439. The next prime is 40480457. The reversal of 40480440 is 4408404.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40480440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119952 + ... + 120288.

It is an arithmetic number, because the mean of its divisors is an integer number (638820).

Almost surely, 2^40480440 is an apocalyptic number.

40480440 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 40480440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81768960).

40480440 is an abundant number, since it is smaller than the sum of its proper divisors (123057480).

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

40480440 is a wasteful number, since it uses less digits than its factorization.

40480440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 40480440 is about 6362.4240663445. The cubic root of 40480440 is about 343.3589784051.

Adding to 40480440 its reverse (4408404), we get a palindrome (44888844).

Subtracting from 40480440 its reverse (4408404), we obtain a square (36072036 = 6006²).

The spelling of 40480440 in words is "forty million, four hundred eighty thousand, four hundred forty".