40228212 has 36 divisors (see below), whose sum is σ = 95125856. Its totient is φ = 13231200.

The previous prime is 40228163. The next prime is 40228231. The reversal of 40228212 is 21282204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266337 + ... + 266487.

Almost surely, 2^40228212 is an apocalyptic number.

It is an amenable number.

40228212 is an abundant number, since it is smaller than the sum of its proper divisors (54897644).

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

40228212 is a wasteful number, since it uses less digits than its factorization.

40228212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 305 counting only the distinct ones).

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

The square root of 40228212 is about 6342.5714028302. The cubic root of 40228212 is about 342.6443513926.

The spelling of 40228212 in words is "forty million, two hundred twenty-eight thousand, two hundred twelve".