40163904 has 112 divisors (see below), whose sum is σ = 128869440. Its totient is φ = 12165120.

The previous prime is 40163899. The next prime is 40163933. The reversal of 40163904 is 40936104.

It is a super-2 number, since 2×40163904² = 3226278369042432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17952 + ... + 20064.

It is an arithmetic number, because the mean of its divisors is an integer number (1150620).

Almost surely, 2^40163904 is an apocalyptic number.

40163904 is a gapful number since it is divisible by the number (44) 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 40163904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64434720).

40163904 is an abundant number, since it is smaller than the sum of its proper divisors (88705536).

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

40163904 is a wasteful number, since it uses less digits than its factorization.

40163904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40163904 is about 6337.4998224852. The cubic root of 40163904 is about 342.4616725897.

The spelling of 40163904 in words is "forty million, one hundred sixty-three thousand, nine hundred four".