40365506 has 16 divisors (see below), whose sum is σ = 65361600. Its totient is φ = 18638928.

The previous prime is 40365491. The next prime is 40365509. The reversal of 40365506 is 60556304.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (40365509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13796 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (4085100).

Almost surely, 2^40365506 is an apocalyptic number.

40365506 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40365506 is a deficient number, since it is larger than the sum of its proper divisors (24996094).

40365506 is a wasteful number, since it uses less digits than its factorization.

40365506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30313.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 40365506 is about 6353.3853967786. The cubic root of 40365506 is about 343.0337099639.

The spelling of 40365506 in words is "forty million, three hundred sixty-five thousand, five hundred six".