40781712 has 40 divisors (see below), whose sum is σ = 107600256. Its totient is φ = 13303936.

The previous prime is 40781707. The next prime is 40781777. The reversal of 40781712 is 21718704.

It is a self number, because there is not a number n which added to its sum of digits gives 40781712.

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, 6783 + ... + 11294.

Almost surely, 2^40781712 is an apocalyptic number.

It is an amenable number.

40781712 is an abundant number, since it is smaller than the sum of its proper divisors (66818544).

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

40781712 is a wasteful number, since it uses less digits than its factorization.

40781712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135 (or 18129 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 40781712 is about 6386.0560598855. The cubic root of 40781712 is about 344.2086799455.

The spelling of 40781712 in words is "forty million, seven hundred eighty-one thousand, seven hundred twelve".