40081146 has 32 divisors (see below), whose sum is σ = 96437760. Its totient is φ = 10848816.

The previous prime is 40081141. The next prime is 40081147. The reversal of 40081146 is 64118004.

It is not an unprimeable number, because it can be changed into a prime (40081141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24316 + ... + 25911.

It is an arithmetic number, because the mean of its divisors is an integer number (3013680).

Almost surely, 2^40081146 is an apocalyptic number.

40081146 is an abundant number, since it is smaller than the sum of its proper divisors (56356614).

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

40081146 is a wasteful number, since it uses less digits than its factorization.

40081146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50258.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 40081146 is about 6330.9672246822. The cubic root of 40081146 is about 342.2262959745.

The spelling of 40081146 in words is "forty million, eighty-one thousand, one hundred forty-six".