40442228 has 12 divisors (see below), whose sum is σ = 73057152. Its totient is φ = 19568760.

The previous prime is 40442209. The next prime is 40442243. The reversal of 40442228 is 82224404.

It is a junction number, because it is equal to n+sod(n) for n = 40442197 and 40442206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162950 + ... + 163197.

It is an arithmetic number, because the mean of its divisors is an integer number (6088096).

Almost surely, 2^40442228 is an apocalyptic number.

It is an amenable number.

40442228 is a deficient number, since it is larger than the sum of its proper divisors (32614924).

40442228 is a wasteful number, since it uses less digits than its factorization.

40442228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326182 (or 326180 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 40442228 is about 6359.4204138428. The cubic root of 40442228 is about 343.2509051081.

The spelling of 40442228 in words is "forty million, four hundred forty-two thousand, two hundred twenty-eight".