40186736 has 20 divisors (see below), whose sum is σ = 79967352. Its totient is φ = 19550016.

The previous prime is 40186733. The next prime is 40186787. The reversal of 40186736 is 63768104.

It is a super-2 number, since 2×40186736² = 3229947500667392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40186696 and 40186705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40186733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33350 + ... + 34533.

Almost surely, 2^40186736 is an apocalyptic number.

It is an amenable number.

40186736 is a deficient number, since it is larger than the sum of its proper divisors (39780616).

40186736 is a wasteful number, since it uses less digits than its factorization.

40186736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67928 (or 67922 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40186736 is about 6339.3009078289. The cubic root of 40186736 is about 342.5265534317.

The spelling of 40186736 in words is "forty million, one hundred eighty-six thousand, seven hundred thirty-six".