40155288 has 16 divisors (see below), whose sum is σ = 100388280. Its totient is φ = 13385088.

The previous prime is 40155259. The next prime is 40155289. The reversal of 40155288 is 88255104.

It is a super-2 number, since 2×40155288² = 3224894308725888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155289) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 836545 + ... + 836592.

Almost surely, 2^40155288 is an apocalyptic number.

It is an amenable number.

40155288 is an abundant number, since it is smaller than the sum of its proper divisors (60232992).

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

40155288 is a wasteful number, since it uses less digits than its factorization.

40155288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673146 (or 1673142 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 40155288 is about 6336.8200226928. The cubic root of 40155288 is about 342.4371824340.

The spelling of 40155288 in words is "forty million, one hundred fifty-five thousand, two hundred eighty-eight".