40381152 has 48 divisors (see below), whose sum is σ = 121145472. Its totient is φ = 11537280.

The previous prime is 40381139. The next prime is 40381157. The reversal of 40381152 is 25118304.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40381157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29374 + ... + 30717.

It is an arithmetic number, because the mean of its divisors is an integer number (2523864).

Almost surely, 2^40381152 is an apocalyptic number.

40381152 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40381152 is an abundant number, since it is smaller than the sum of its proper divisors (80764320).

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

40381152 is a wasteful number, since it uses less digits than its factorization.

40381152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60111 (or 60103 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 40381152 is about 6354.6165895355. The cubic root of 40381152 is about 343.0780251286.

Adding to 40381152 its reverse (25118304), we get a palindrome (65499456).

The spelling of 40381152 in words is "forty million, three hundred eighty-one thousand, one hundred fifty-two".