40821634 has 8 divisors (see below), whose sum is σ = 69979968. Its totient is φ = 17494980.

The previous prime is 40821631. The next prime is 40821653. The reversal of 40821634 is 43612804.

40821634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40821631) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1457902 + ... + 1457929.

It is an arithmetic number, because the mean of its divisors is an integer number (8747496).

Almost surely, 2^40821634 is an apocalyptic number.

40821634 is a deficient number, since it is larger than the sum of its proper divisors (29158334).

40821634 is a wasteful number, since it uses less digits than its factorization.

40821634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915840.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40821634 is about 6389.1810116790. The cubic root of 40821634 is about 344.3209608082.

The spelling of 40821634 in words is "forty million, eight hundred twenty-one thousand, six hundred thirty-four".