40501644 has 12 divisors (see below), whose sum is σ = 94503864. Its totient is φ = 13500544.

The previous prime is 40501631. The next prime is 40501649. The reversal of 40501644 is 44610504.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40501649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687557 + ... + 1687580.

It is an arithmetic number, because the mean of its divisors is an integer number (7875322).

Almost surely, 2^40501644 is an apocalyptic number.

It is an amenable number.

40501644 is an abundant number, since it is smaller than the sum of its proper divisors (54002220).

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

40501644 is a wasteful number, since it uses less digits than its factorization.

40501644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375144 (or 3375142 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40501644 is about 6364.0901942069. The cubic root of 40501644 is about 343.4189193950.

The spelling of 40501644 in words is "forty million, five hundred one thousand, six hundred forty-four".