40680128 has 28 divisors (see below), whose sum is σ = 80939640. Its totient is φ = 20285952.

The previous prime is 40680119. The next prime is 40680137. The reversal of 40680128 is 82108604.

It is an interprime number because it is at equal distance from previous prime (40680119) and next prime (40680137).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40680128.

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, 35468 + ... + 36596.

Almost surely, 2^40680128 is an apocalyptic number.

It is an amenable number.

40680128 is a deficient number, since it is larger than the sum of its proper divisors (40259512).

40680128 is a wasteful number, since it uses less digits than its factorization.

40680128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 40680128 is about 6378.0975219888. The cubic root of 40680128 is about 343.9226435037.

The spelling of 40680128 in words is "forty million, six hundred eighty thousand, one hundred twenty-eight".