40009228 has 24 divisors (see below), whose sum is σ = 84726432. Its totient is φ = 16137984.

The previous prime is 40009201. The next prime is 40009253. The reversal of 40009228 is 82290004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41551 + ... + 42502.

It is an arithmetic number, because the mean of its divisors is an integer number (3530268).

Almost surely, 2^40009228 is an apocalyptic number.

It is an amenable number.

40009228 is an abundant number, since it is smaller than the sum of its proper divisors (44717204).

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

40009228 is a wasteful number, since it uses less digits than its factorization.

40009228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84081 (or 84079 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 40009228 is about 6325.2848157217. The cubic root of 40009228 is about 342.0214867432.

The spelling of 40009228 in words is "forty million, nine thousand, two hundred twenty-eight".