40381488 has 180 divisors, whose sum is σ = 135069480. Its totient is φ = 11225088.

The previous prime is 40381447. The next prime is 40381489. The reversal of 40381488 is 88418304.

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 (40381489) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 416256 + ... + 416352.

It is an arithmetic number, because the mean of its divisors is an integer number (750386).

Almost surely, 2^40381488 is an apocalyptic number.

40381488 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 40381488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67534740).

40381488 is an abundant number, since it is smaller than the sum of its proper divisors (94687992).

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

40381488 is a wasteful number, since it uses less digits than its factorization.

40381488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 40381488 is about 6354.6430269528. The cubic root of 40381488 is about 343.0789766773.

The spelling of 40381488 in words is "forty million, three hundred eighty-one thousand, four hundred eighty-eight".