21194674 has 16 divisors (see below), whose sum is σ = 32447520. Its totient is φ = 10380960.

The previous prime is 21194653. The next prime is 21194683. The reversal of 21194674 is 47649112.

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, 25729 + ... + 26539.

It is an arithmetic number, because the mean of its divisors is an integer number (2027970).

Almost surely, 2^21194674 is an apocalyptic number.

21194674 is a deficient number, since it is larger than the sum of its proper divisors (11252846).

21194674 is a wasteful number, since it uses less digits than its factorization.

21194674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its digits is 12096, while the sum is 34.

The square root of 21194674 is about 4603.7673703175. The cubic root of 21194674 is about 276.7423218529.

The spelling of 21194674 in words is "twenty-one million, one hundred ninety-four thousand, six hundred seventy-four".