40159872 has 96 divisors (see below), whose sum is σ = 117430560. Its totient is φ = 13171200.

The previous prime is 40159871. The next prime is 40159883. The reversal of 40159872 is 27895104.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×40159872² = 3225630638112768, which contains 22 as substring.

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 (40159871) 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, 81547 + ... + 82037.

It is an arithmetic number, because the mean of its divisors is an integer number (1223235).

Almost surely, 2^40159872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40159872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58715280).

40159872 is an abundant number, since it is smaller than the sum of its proper divisors (77270688).

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

40159872 is a wasteful number, since it uses less digits than its factorization.

40159872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40159872 is about 6337.1817079834. The cubic root of 40159872 is about 342.4502124515.

The spelling of 40159872 in words is "forty million, one hundred fifty-nine thousand, eight hundred seventy-two".