40147256 has 16 divisors (see below), whose sum is σ = 75981240. Its totient is φ = 19885600.

The previous prime is 40147249. The next prime is 40147267. The reversal of 40147256 is 65274104.

It is a super-2 number, since 2×40147256² = 3223604328659072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22595 + ... + 24306.

Almost surely, 2^40147256 is an apocalyptic number.

It is an amenable number.

40147256 is a deficient number, since it is larger than the sum of its proper divisors (35833984).

40147256 is a wasteful number, since it uses less digits than its factorization.

40147256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47014 (or 47010 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40147256 is about 6336.1862346367. The cubic root of 40147256 is about 342.4143490871.

The spelling of 40147256 in words is "forty million, one hundred forty-seven thousand, two hundred fifty-six".