40868145 has 80 divisors (see below), whose sum is σ = 79453440. Its totient is φ = 20030976.

The previous prime is 40868131. The next prime is 40868161. The reversal of 40868145 is 54186804.

It is not a de Polignac number, because 40868145 - 2⁴ = 40868129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 361609 + ... + 361721.

It is an arithmetic number, because the mean of its divisors is an integer number (993168).

Almost surely, 2^40868145 is an apocalyptic number.

40868145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40868145 is a deficient number, since it is larger than the sum of its proper divisors (38585295).

40868145 is a wasteful number, since it uses less digits than its factorization.

40868145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 40868145 is about 6392.8198003698. The cubic root of 40868145 is about 344.4516809864.

The spelling of 40868145 in words is "forty million, eight hundred sixty-eight thousand, one hundred forty-five".