21941074 has 16 divisors (see below), whose sum is σ = 33926400. Its totient is φ = 10634544.

The previous prime is 21941053. The next prime is 21941113. The reversal of 21941074 is 47014912.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35137 + ... + 35755.

It is an arithmetic number, because the mean of its divisors is an integer number (2120400).

Almost surely, 2^21941074 is an apocalyptic number.

21941074 is a deficient number, since it is larger than the sum of its proper divisors (11985326).

21941074 is a wasteful number, since it uses less digits than its factorization.

21941074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 21941074 is about 4684.1300152750. The cubic root of 21941074 is about 279.9535382092.

Adding to 21941074 its reverse (47014912), we get a palindrome (68955986).

The spelling of 21941074 in words is "twenty-one million, nine hundred forty-one thousand, seventy-four".