40345506 has 16 divisors (see below), whose sum is σ = 89656800. Its totient is φ = 13448484.

The previous prime is 40345499. The next prime is 40345523. The reversal of 40345506 is 60554304.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40345506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373516 + ... + 373623.

It is an arithmetic number, because the mean of its divisors is an integer number (5603550).

Almost surely, 2^40345506 is an apocalyptic number.

40345506 is an abundant number, since it is smaller than the sum of its proper divisors (49311294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40345506 is a wasteful number, since it uses less digits than its factorization.

40345506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747150 (or 747144 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 40345506 is about 6351.8112377494. The cubic root of 40345506 is about 342.9770460093.

The spelling of 40345506 in words is "forty million, three hundred forty-five thousand, five hundred six".