21862294 has 4 divisors (see below), whose sum is σ = 32793444. Its totient is φ = 10931146.

The previous prime is 21862241. The next prime is 21862297. The reversal of 21862294 is 49226812.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21862297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5465572 + ... + 5465575.

It is an arithmetic number, because the mean of its divisors is an integer number (8198361).

Almost surely, 2^21862294 is an apocalyptic number.

21862294 is a deficient number, since it is larger than the sum of its proper divisors (10931150).

21862294 is a wasteful number, since it uses less digits than its factorization.

21862294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10931149.

The product of its digits is 13824, while the sum is 34.

The square root of 21862294 is about 4675.7132076294. The cubic root of 21862294 is about 279.6180762265.

The spelling of 21862294 in words is "twenty-one million, eight hundred sixty-two thousand, two hundred ninety-four".