21374282 has 8 divisors (see below), whose sum is σ = 32082816. Its totient is φ = 10680012.

The previous prime is 21374281. The next prime is 21374293. The reversal of 21374282 is 28247312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21374281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (4010352).

Almost surely, 2^21374282 is an apocalyptic number.

21374282 is a deficient number, since it is larger than the sum of its proper divisors (10708534).

21374282 is a wasteful number, since it uses less digits than its factorization.

21374282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its digits is 5376, while the sum is 29.

The square root of 21374282 is about 4623.2328515877. The cubic root of 21374282 is about 277.5218476969.

The spelling of 21374282 in words is "twenty-one million, three hundred seventy-four thousand, two hundred eighty-two".