21469822 has 8 divisors (see below), whose sum is σ = 35132472. Its totient is φ = 9759000.

The previous prime is 21469807. The next prime is 21469843. The reversal of 21469822 is 22896412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487929 + ... + 487972.

It is an arithmetic number, because the mean of its divisors is an integer number (4391559).

Almost surely, 2^21469822 is an apocalyptic number.

21469822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21469822 is a deficient number, since it is larger than the sum of its proper divisors (13662650).

21469822 is a wasteful number, since it uses less digits than its factorization.

21469822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975914.

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

The square root of 21469822 is about 4633.5539276024. The cubic root of 21469822 is about 277.9347275289.

The spelling of 21469822 in words is "twenty-one million, four hundred sixty-nine thousand, eight hundred twenty-two".