40447278 has 24 divisors (see below), whose sum is σ = 87755616. Its totient is φ = 13464000.

The previous prime is 40447261. The next prime is 40447283. The reversal of 40447278 is 87274404.

40447278 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 11 ways as a sum of consecutive naturals, for example, 20683 + ... + 22553.

It is an arithmetic number, because the mean of its divisors is an integer number (3656484).

Almost surely, 2^40447278 is an apocalyptic number.

40447278 is an abundant number, since it is smaller than the sum of its proper divisors (47308338).

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

40447278 is a wasteful number, since it uses less digits than its factorization.

40447278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 40447278 is about 6359.8174502103. The cubic root of 40447278 is about 343.2651917008.

It can be divided in two parts, 404472 and 78, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 40447278 in words is "forty million, four hundred forty-seven thousand, two hundred seventy-eight".