21326762 has 4 divisors (see below), whose sum is σ = 31990146. Its totient is φ = 10663380.

The previous prime is 21326749. The next prime is 21326771. The reversal of 21326762 is 26762312.

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

It can be written as a sum of positive squares in only one way, i.e., 19811401 + 1515361 = 4451^2 + 1231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331689 + ... + 5331692.

Almost surely, 2^21326762 is an apocalyptic number.

21326762 is a deficient number, since it is larger than the sum of its proper divisors (10663384).

21326762 is a wasteful number, since it uses less digits than its factorization.

21326762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663383.

The product of its digits is 6048, while the sum is 29.

The square root of 21326762 is about 4618.0907310273. The cubic root of 21326762 is about 277.3160298905.

The spelling of 21326762 in words is "twenty-one million, three hundred twenty-six thousand, seven hundred sixty-two".