40170345 has 16 divisors (see below), whose sum is σ = 66010560. Its totient is φ = 20844864.

The previous prime is 40170323. The next prime is 40170359. The reversal of 40170345 is 54307104.

It is not a de Polignac number, because 40170345 - 2⁸ = 40170089 is a prime.

It is a super-2 number, since 2×40170345² = 3227313234838050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35635 + ... + 36744.

It is an arithmetic number, because the mean of its divisors is an integer number (4125660).

Almost surely, 2^40170345 is an apocalyptic number.

It is an amenable number.

40170345 is a deficient number, since it is larger than the sum of its proper divisors (25840215).

40170345 is a wasteful number, since it uses less digits than its factorization.

40170345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72424.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 40170345 is about 6338.0079678082. The cubic root of 40170345 is about 342.4799782282.

Adding to 40170345 its reverse (54307104), we get a palindrome (94477449).

The spelling of 40170345 in words is "forty million, one hundred seventy thousand, three hundred forty-five".