21014274 has 16 divisors (see below), whose sum is σ = 42463008. Its totient is φ = 6932352.

The previous prime is 21014243. The next prime is 21014297. The reversal of 21014274 is 47241012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21014274.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17472 + ... + 18635.

It is an arithmetic number, because the mean of its divisors is an integer number (2653938).

Almost surely, 2^21014274 is an apocalyptic number.

21014274 is an abundant number, since it is smaller than the sum of its proper divisors (21448734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21014274 is a wasteful number, since it uses less digits than its factorization.

21014274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36209.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 21014274 is about 4584.1328514780. The cubic root of 21014274 is about 275.9549128198.

Adding to 21014274 its reverse (47241012), we get a palindrome (68255286).

The spelling of 21014274 in words is "twenty-one million, fourteen thousand, two hundred seventy-four".