21846254 has 4 divisors (see below), whose sum is σ = 32769384. Its totient is φ = 10923126.

The previous prime is 21846239. The next prime is 21846271. The reversal of 21846254 is 45264812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21846254.

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, 5461562 + ... + 5461565.

It is an arithmetic number, because the mean of its divisors is an integer number (8192346).

Almost surely, 2^21846254 is an apocalyptic number.

21846254 is a deficient number, since it is larger than the sum of its proper divisors (10923130).

21846254 is a wasteful number, since it uses less digits than its factorization.

21846254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923129.

The product of its digits is 15360, while the sum is 32.

The square root of 21846254 is about 4673.9976465548. The cubic root of 21846254 is about 279.5496757914.

The spelling of 21846254 in words is "twenty-one million, eight hundred forty-six thousand, two hundred fifty-four".