21246262 has 4 divisors (see below), whose sum is σ = 31869396. Its totient is φ = 10623130.

The previous prime is 21246229. The next prime is 21246263. The reversal of 21246262 is 26264212.

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 (21246263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5311564 + ... + 5311567.

It is an arithmetic number, because the mean of its divisors is an integer number (7967349).

Almost surely, 2^21246262 is an apocalyptic number.

21246262 is a deficient number, since it is larger than the sum of its proper divisors (10623134).

21246262 is a wasteful number, since it uses less digits than its factorization.

21246262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623133.

The product of its digits is 2304, while the sum is 25.

The square root of 21246262 is about 4609.3667677893. The cubic root of 21246262 is about 276.9666709108.

The spelling of 21246262 in words is "twenty-one million, two hundred forty-six thousand, two hundred sixty-two".