40442648 has 16 divisors (see below), whose sum is σ = 79127280. Its totient is φ = 19342048.

The previous prime is 40442639. The next prime is 40442653. The reversal of 40442648 is 84624404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109715 + ... + 110082.

It is an arithmetic number, because the mean of its divisors is an integer number (4945455).

Almost surely, 2^40442648 is an apocalyptic number.

It is an amenable number.

40442648 is a deficient number, since it is larger than the sum of its proper divisors (38684632).

40442648 is a wasteful number, since it uses less digits than its factorization.

40442648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219826 (or 219822 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 40442648 is about 6359.4534356342. The cubic root of 40442648 is about 343.2520933453.

The spelling of 40442648 in words is "forty million, four hundred forty-two thousand, six hundred forty-eight".