40821744 has 20 divisors (see below), whose sum is σ = 105456296. Its totient is φ = 13607232.

The previous prime is 40821707. The next prime is 40821779. The reversal of 40821744 is 44712804.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425179 + ... + 425274.

Almost surely, 2^40821744 is an apocalyptic number.

It is an amenable number.

40821744 is an abundant number, since it is smaller than the sum of its proper divisors (64634552).

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

40821744 is a wasteful number, since it uses less digits than its factorization.

40821744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850464 (or 850458 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 40821744 is about 6389.1896199753. The cubic root of 40821744 is about 344.3212700827.

The spelling of 40821744 in words is "forty million, eight hundred twenty-one thousand, seven hundred forty-four".