40231228 has 6 divisors (see below), whose sum is σ = 70404656. Its totient is φ = 20115612.

The previous prime is 40231199. The next prime is 40231237. The reversal of 40231228 is 82213204.

40231228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40231199 and 40231208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028900 + ... + 5028907.

Almost surely, 2^40231228 is an apocalyptic number.

It is an amenable number.

40231228 is a deficient number, since it is larger than the sum of its proper divisors (30173428).

40231228 is a wasteful number, since it uses less digits than its factorization.

40231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10057811 (or 10057809 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 40231228 is about 6342.8091568326. The cubic root of 40231228 is about 342.6529141192.

The spelling of 40231228 in words is "forty million, two hundred thirty-one thousand, two hundred twenty-eight".