40371228 has 18 divisors (see below), whose sum is σ = 102049584. Its totient is φ = 13457064.

The previous prime is 40371223. The next prime is 40371229. The reversal of 40371228 is 82217304.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40371223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560676 + ... + 560747.

Almost surely, 2^40371228 is an apocalyptic number.

It is an amenable number.

40371228 is an abundant number, since it is smaller than the sum of its proper divisors (61678356).

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

40371228 is a wasteful number, since it uses less digits than its factorization.

40371228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121433 (or 1121428 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40371228 is about 6353.8356919266. The cubic root of 40371228 is about 343.0499180778.

It can be divided in two parts, 403 and 71228, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 40371228 in words is "forty million, three hundred seventy-one thousand, two hundred twenty-eight".