40781148 has 24 divisors (see below), whose sum is σ = 97181952. Its totient is φ = 13304304.

The previous prime is 40781131. The next prime is 40781159. The reversal of 40781148 is 84118704.

40781148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35590 + ... + 36717.

It is an arithmetic number, because the mean of its divisors is an integer number (4049248).

Almost surely, 2^40781148 is an apocalyptic number.

It is an amenable number.

40781148 is an abundant number, since it is smaller than the sum of its proper divisors (56400804).

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

40781148 is a wasteful number, since it uses less digits than its factorization.

40781148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72361 (or 72359 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 40781148 is about 6386.0119010224. The cubic root of 40781148 is about 344.2070931673.

The spelling of 40781148 in words is "forty million, seven hundred eighty-one thousand, one hundred forty-eight".