40947228 has 48 divisors (see below), whose sum is σ = 121327360. Its totient is φ = 11698992.

The previous prime is 40947227. The next prime is 40947229. The reversal of 40947228 is 82274904.

It is an interprime number because it is at equal distance from previous prime (40947227) and next prime (40947229).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40947192 and 40947201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40947227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26326 + ... + 27837.

Almost surely, 2^40947228 is an apocalyptic number.

It is an amenable number.

40947228 is an abundant number, since it is smaller than the sum of its proper divisors (80380132).

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

40947228 is a wasteful number, since it uses less digits than its factorization.

40947228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54183 (or 54175 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40947228 is about 6399.0021097043. The cubic root of 40947228 is about 344.6737179827.

The spelling of 40947228 in words is "forty million, nine hundred forty-seven thousand, two hundred twenty-eight".