40408560 has 60 divisors (see below), whose sum is σ = 135707832. Its totient is φ = 10775424.

The previous prime is 40408553. The next prime is 40408567. The reversal of 40408560 is 6580404.

It is an interprime number because it is at equal distance from previous prime (40408553) and next prime (40408567).

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40408567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27342 + ... + 28781.

Almost surely, 2^40408560 is an apocalyptic number.

40408560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40408560 is an abundant number, since it is smaller than the sum of its proper divisors (95299272).

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

40408560 is a wasteful number, since it uses less digits than its factorization.

40408560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56142 (or 56133 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40408560 is about 6356.7727661133. The cubic root of 40408560 is about 343.1556269754.

Adding to 40408560 its reverse (6580404), we get a palindrome (46988964).

The spelling of 40408560 in words is "forty million, four hundred eight thousand, five hundred sixty".