40556880 has 240 divisors, whose sum is σ = 167905920. Its totient is φ = 8543232.

The previous prime is 40556839. The next prime is 40556891. The reversal of 40556880 is 8865504.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65211 + ... + 65829.

It is an arithmetic number, because the mean of its divisors is an integer number (699608).

Almost surely, 2^40556880 is an apocalyptic number.

40556880 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 40556880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83952960).

40556880 is an abundant number, since it is smaller than the sum of its proper divisors (127349040).

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

40556880 is a wasteful number, since it uses less digits than its factorization.

40556880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 40556880 is about 6368.4283775512. The cubic root of 40556880 is about 343.5749663169.

The spelling of 40556880 in words is "forty million, five hundred fifty-six thousand, eight hundred eighty".