40521888 has 72 divisors (see below), whose sum is σ = 125719776. Its totient is φ = 12278400.

The previous prime is 40521881. The next prime is 40521893. The reversal of 40521888 is 88812504.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (40521881) 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, 3228 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (1746108).

Almost surely, 2^40521888 is an apocalyptic number.

40521888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40521888 is an abundant number, since it is smaller than the sum of its proper divisors (85197888).

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

40521888 is a wasteful number, since it uses less digits than its factorization.

40521888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12818 (or 12807 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 40521888 is about 6365.6804820852. The cubic root of 40521888 is about 343.4761270697.

The spelling of 40521888 in words is "forty million, five hundred twenty-one thousand, eight hundred eighty-eight".