40285256 has 24 divisors (see below), whose sum is σ = 83027910. Its totient is φ = 18311040.

The previous prime is 40285253. The next prime is 40285277. The reversal of 40285256 is 65258204.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 19945156 = 4510^2 + 4466^2 .

It is not an unprimeable number, because it can be changed into a prime (40285253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19841 + ... + 21776.

Almost surely, 2^40285256 is an apocalyptic number.

It is an amenable number.

40285256 is an abundant number, since it is smaller than the sum of its proper divisors (42742654).

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

40285256 is a wasteful number, since it uses less digits than its factorization.

40285256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41645 (or 41630 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 40285256 is about 6347.0667240860. The cubic root of 40285256 is about 342.8062325863.

It can be divided in two parts, 402 and 85256, that added together give a palindrome (85658).

The spelling of 40285256 in words is "forty million, two hundred eighty-five thousand, two hundred fifty-six".