40840284 has 24 divisors (see below), whose sum is σ = 95416720. Its totient is φ = 13595904.

The previous prime is 40840277. The next prime is 40840309. The reversal of 40840284 is 48204804.

It is a congruent number.

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, 10422 + ... + 13794.

Almost surely, 2^40840284 is an apocalyptic number.

It is an amenable number.

40840284 is an abundant number, since it is smaller than the sum of its proper divisors (54576436).

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

40840284 is a wasteful number, since it uses less digits than its factorization.

40840284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389 (or 4387 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 40840284 is about 6390.6403435024. The cubic root of 40840284 is about 344.3733889580.

The spelling of 40840284 in words is "forty million, eight hundred forty thousand, two hundred eighty-four".