40072866 has 16 divisors (see below), whose sum is σ = 80724000. Its totient is φ = 13261248.

The previous prime is 40072853. The next prime is 40072883. The reversal of 40072866 is 66827004.

40072866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 23191 + ... + 24858.

It is an arithmetic number, because the mean of its divisors is an integer number (5045250).

Almost surely, 2^40072866 is an apocalyptic number.

40072866 is an abundant number, since it is smaller than the sum of its proper divisors (40651134).

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

40072866 is a wasteful number, since it uses less digits than its factorization.

40072866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48193.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 40072866 is about 6330.3132623907. The cubic root of 40072866 is about 342.2027285439.

The spelling of 40072866 in words is "forty million, seventy-two thousand, eight hundred sixty-six".