40156488 has 24 divisors (see below), whose sum is σ = 108757350. Its totient is φ = 13385472.

The previous prime is 40156477. The next prime is 40156531. The reversal of 40156488 is 88465104.

40156488 is a `hidden beast` number, since 4 + 0 + 1 + 5 + 648 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22867524 + 17288964 = 4782^2 + 4158^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×40156488² = 3225087056988288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278793 + ... + 278936.

Almost surely, 2^40156488 is an apocalyptic number.

It is an amenable number.

40156488 is an abundant number, since it is smaller than the sum of its proper divisors (68600862).

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

40156488 is a wasteful number, since it uses less digits than its factorization.

40156488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557741 (or 557734 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 40156488 is about 6336.9147067007. The cubic root of 40156488 is about 342.4405935291.

The spelling of 40156488 in words is "forty million, one hundred fifty-six thousand, four hundred eighty-eight".