40105056 has 48 divisors (see below), whose sum is σ = 106236144. Its totient is φ = 13246464.

The previous prime is 40105049. The next prime is 40105069. The reversal of 40105056 is 65050104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9000 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (2213253).

Almost surely, 2^40105056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40105056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53118072).

40105056 is an abundant number, since it is smaller than the sum of its proper divisors (66131088).

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

40105056 is a wasteful number, since it uses less digits than its factorization.

40105056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 3815 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40105056 is about 6332.8552802034. The cubic root of 40105056 is about 342.2943329861.

The spelling of 40105056 in words is "forty million, one hundred five thousand, fifty-six".