21674104 has 8 divisors (see below), whose sum is σ = 40638960. Its totient is φ = 10837048.

The previous prime is 21674071. The next prime is 21674113. The reversal of 21674104 is 40147612.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1354624 + ... + 1354639.

It is an arithmetic number, because the mean of its divisors is an integer number (5079870).

Almost surely, 2^21674104 is an apocalyptic number.

It is an amenable number.

21674104 is a deficient number, since it is larger than the sum of its proper divisors (18964856).

21674104 is a wasteful number, since it uses less digits than its factorization.

21674104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709269 (or 2709265 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 21674104 is about 4655.5455104638. The cubic root of 21674104 is about 278.8134482582.

The spelling of 21674104 in words is "twenty-one million, six hundred seventy-four thousand, one hundred four".