40057706 has 8 divisors (see below), whose sum is σ = 64708644. Its totient is φ = 18488160.

The previous prime is 40057649. The next prime is 40057727. The reversal of 40057706 is 60775004.

It can be written as a sum of positive squares in 2 ways, for example, as 38328481 + 1729225 = 6191^2 + 1315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 770315 + ... + 770366.

Almost surely, 2^40057706 is an apocalyptic number.

40057706 is a deficient number, since it is larger than the sum of its proper divisors (24650938).

40057706 is a wasteful number, since it uses less digits than its factorization.

40057706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540696.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 40057706 is about 6329.1157360251. The cubic root of 40057706 is about 342.1595700993.

It can be divided in two parts, 4005 and 7706, that added together give a palindrome (11711).

The spelling of 40057706 in words is "forty million, fifty-seven thousand, seven hundred six".