40005888 has 72 divisors (see below), whose sum is σ = 114692928. Its totient is φ = 12306432.

The previous prime is 40005871. The next prime is 40005907. The reversal of 40005888 is 88850004.

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, 7981 + ... + 11987.

Almost surely, 2^40005888 is an apocalyptic number.

40005888 is a gapful number since it is divisible by the number (48) 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 40005888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57346464).

40005888 is an abundant number, since it is smaller than the sum of its proper divisors (74687040).

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

40005888 is a wasteful number, since it uses less digits than its factorization.

40005888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 40005888 is about 6325.0207904797. The cubic root of 40005888 is about 342.0119690760.

The spelling of 40005888 in words is "forty million, five thousand, eight hundred eighty-eight".