21282674 has 32 divisors (see below), whose sum is σ = 38900736. Its totient is φ = 8524800.

The previous prime is 21282671. The next prime is 21282719. The reversal of 21282674 is 47628212.

It is a self number, because there is not a number n which added to its sum of digits gives 21282674.

It is not an unprimeable number, because it can be changed into a prime (21282671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52874 + ... + 53274.

It is an arithmetic number, because the mean of its divisors is an integer number (1215648).

Almost surely, 2^21282674 is an apocalyptic number.

21282674 is a deficient number, since it is larger than the sum of its proper divisors (17618062).

21282674 is a wasteful number, since it uses less digits than its factorization.

21282674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its digits is 10752, while the sum is 32.

The square root of 21282674 is about 4613.3148602713. The cubic root of 21282674 is about 277.1248031146.

The spelling of 21282674 in words is "twenty-one million, two hundred eighty-two thousand, six hundred seventy-four".