40286457 has 16 divisors (see below), whose sum is σ = 60406080. Its totient is φ = 26532576.

The previous prime is 40286443. The next prime is 40286459. The reversal of 40286457 is 75468204.

40286457 is a `hidden beast` number, since 4 + 0 + 2 + 8 + 645 + 7 = 666.

It is not a de Polignac number, because 40286457 - 2¹⁰ = 40285433 is a prime.

It is a super-2 number, since 2×40286457² = 3245997235225698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40286459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6748 + ... + 11229.

It is an arithmetic number, because the mean of its divisors is an integer number (3775380).

Almost surely, 2^40286457 is an apocalyptic number.

It is an amenable number.

40286457 is a deficient number, since it is larger than the sum of its proper divisors (20119623).

40286457 is a wasteful number, since it uses less digits than its factorization.

40286457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18069 (or 18063 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 40286457 is about 6347.1613340138. The cubic root of 40286457 is about 342.8096391775.

The spelling of 40286457 in words is "forty million, two hundred eighty-six thousand, four hundred fifty-seven".