40222128 has 40 divisors (see below), whose sum is σ = 107262976. Its totient is φ = 12974400.

The previous prime is 40222123. The next prime is 40222141. The reversal of 40222128 is 82122204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40222121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12028 + ... + 15003.

Almost surely, 2^40222128 is an apocalyptic number.

40222128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40222128 is an abundant number, since it is smaller than the sum of its proper divisors (67040848).

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

40222128 is a wasteful number, since it uses less digits than its factorization.

40222128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27073 (or 27067 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 40222128 is about 6342.0917684941. The cubic root of 40222128 is about 342.6270770037.

The spelling of 40222128 in words is "forty million, two hundred twenty-two thousand, one hundred twenty-eight".