21232294 has 4 divisors (see below), whose sum is σ = 31848444. Its totient is φ = 10616146.

The previous prime is 21232259. The next prime is 21232307. The reversal of 21232294 is 49223212.

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

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, 5308072 + ... + 5308075.

It is an arithmetic number, because the mean of its divisors is an integer number (7962111).

Almost surely, 2^21232294 is an apocalyptic number.

21232294 is a deficient number, since it is larger than the sum of its proper divisors (10616150).

21232294 is a wasteful number, since it uses less digits than its factorization.

21232294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616149.

The product of its digits is 1728, while the sum is 25.

The square root of 21232294 is about 4607.8513430882. The cubic root of 21232294 is about 276.9059619012.

The spelling of 21232294 in words is "twenty-one million, two hundred thirty-two thousand, two hundred ninety-four".