40284256 has 48 divisors (see below), whose sum is σ = 84974400. Its totient is φ = 18741888.

The previous prime is 40284191. The next prime is 40284287. The reversal of 40284256 is 65248204.

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, 35311 + ... + 36433.

It is an arithmetic number, because the mean of its divisors is an integer number (1770300).

Almost surely, 2^40284256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40284256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42487200).

40284256 is an abundant number, since it is smaller than the sum of its proper divisors (44690144).

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

40284256 is a wasteful number, since it uses less digits than its factorization.

40284256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 40284256 is about 6346.9879470502. The cubic root of 40284256 is about 342.8033960724.

The spelling of 40284256 in words is "forty million, two hundred eighty-four thousand, two hundred fifty-six".