40457284 has 12 divisors (see below), whose sum is σ = 80914624. Its totient is φ = 17338824.

The previous prime is 40457273. The next prime is 40457293. The reversal of 40457284 is 48275404.

It is a happy number.

40457284 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722424 + ... + 722479.

Almost surely, 2^40457284 is an apocalyptic number.

It is an amenable number.

40457284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40457284 is a wasteful number, since it uses less digits than its factorization.

40457284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444914 (or 1444912 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 40457284 is about 6360.6040593642. The cubic root of 40457284 is about 343.2934954458.

The spelling of 40457284 in words is "forty million, four hundred fifty-seven thousand, two hundred eighty-four".