21299302 has 8 divisors (see below), whose sum is σ = 32308200. Its totient is φ = 10529904.

The previous prime is 21299281. The next prime is 21299303. The reversal of 21299302 is 20399212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21299303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59652 + ... + 60007.

It is an arithmetic number, because the mean of its divisors is an integer number (4038525).

Almost surely, 2^21299302 is an apocalyptic number.

21299302 is a deficient number, since it is larger than the sum of its proper divisors (11008898).

21299302 is a wasteful number, since it uses less digits than its factorization.

21299302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119750.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 21299302 is about 4615.1166832486. The cubic root of 21299302 is about 277.1969561983.

The spelling of 21299302 in words is "twenty-one million, two hundred ninety-nine thousand, three hundred two".