40281966 has 24 divisors (see below), whose sum is σ = 88181184. Its totient is φ = 13288320.

The previous prime is 40281949. The next prime is 40281977. The reversal of 40281966 is 66918204.

It is a self number, because there is not a number n which added to its sum of digits gives 40281966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9790 + ... + 13281.

It is an arithmetic number, because the mean of its divisors is an integer number (3674216).

Almost surely, 2^40281966 is an apocalyptic number.

40281966 is an abundant number, since it is smaller than the sum of its proper divisors (47899218).

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

40281966 is a wasteful number, since it uses less digits than its factorization.

40281966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23176 (or 23173 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40281966 is about 6346.8075439547. The cubic root of 40281966 is about 342.7969002786.

The spelling of 40281966 in words is "forty million, two hundred eighty-one thousand, nine hundred sixty-six".