21229862 has 4 divisors (see below), whose sum is σ = 31844796. Its totient is φ = 10614930.

The previous prime is 21229847. The next prime is 21229867. The reversal of 21229862 is 26892212.

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 (21229867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5307464 + ... + 5307467.

It is an arithmetic number, because the mean of its divisors is an integer number (7961199).

Almost surely, 2^21229862 is an apocalyptic number.

21229862 is a deficient number, since it is larger than the sum of its proper divisors (10614934).

21229862 is a wasteful number, since it uses less digits than its factorization.

21229862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10614933.

The product of its digits is 6912, while the sum is 32.

The square root of 21229862 is about 4607.5874381285. The cubic root of 21229862 is about 276.8953889973.

The spelling of 21229862 in words is "twenty-one million, two hundred twenty-nine thousand, eight hundred sixty-two".