40156704 has 72 divisors (see below), whose sum is σ = 130515840. Its totient is φ = 11472768.

The previous prime is 40156693. The next prime is 40156723. The reversal of 40156704 is 40765104.

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

It is a super-2 number, since 2×40156704² = 3225121752287232, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7944 + ... + 11975.

It is an arithmetic number, because the mean of its divisors is an integer number (1812720).

Almost surely, 2^40156704 is an apocalyptic number.

It is an amenable number.

40156704 is an abundant number, since it is smaller than the sum of its proper divisors (90359136).

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

40156704 is a wasteful number, since it uses less digits than its factorization.

40156704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19942 (or 19931 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 40156704 is about 6336.9317496719. The cubic root of 40156704 is about 342.4412075190.

Subtracting 40156704 from its reverse (40765104), we obtain a square (608400 = 780²).

The spelling of 40156704 in words is "forty million, one hundred fifty-six thousand, seven hundred four".