40155222 has 16 divisors (see below), whose sum is σ = 80626032. Its totient is φ = 13332480.

The previous prime is 40155209. The next prime is 40155233. The reversal of 40155222 is 22255104.

It is a happy number.

It is a super-2 number, since 2×40155222² = 3224883707738568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11479 + ... + 14562.

It is an arithmetic number, because the mean of its divisors is an integer number (5039127).

Almost surely, 2^40155222 is an apocalyptic number.

40155222 is an abundant number, since it is smaller than the sum of its proper divisors (40470810).

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

40155222 is a wasteful number, since it uses less digits than its factorization.

40155222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26303.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40155222 is about 6336.8148150313. The cubic root of 40155222 is about 342.4369948218.

The spelling of 40155222 in words is "forty million, one hundred fifty-five thousand, two hundred twenty-two".