21362674 has 4 divisors (see below), whose sum is σ = 32044014. Its totient is φ = 10681336.

The previous prime is 21362651. The next prime is 21362711. The reversal of 21362674 is 47626312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 3087049 = 4275^2 + 1757^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340667 + ... + 5340670.

Almost surely, 2^21362674 is an apocalyptic number.

21362674 is a deficient number, since it is larger than the sum of its proper divisors (10681340).

21362674 is a wasteful number, since it uses less digits than its factorization.

21362674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10681339.

The product of its digits is 12096, while the sum is 31.

The square root of 21362674 is about 4621.9772825058. The cubic root of 21362674 is about 277.4715995067.

Adding to 21362674 its reverse (47626312), we get a palindrome (68988986).

The spelling of 21362674 in words is "twenty-one million, three hundred sixty-two thousand, six hundred seventy-four".