21348302 has 4 divisors (see below), whose sum is σ = 32022456. Its totient is φ = 10674150.

The previous prime is 21348289. The next prime is 21348307. The reversal of 21348302 is 20384312.

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 (21348307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5337074 + ... + 5337077.

It is an arithmetic number, because the mean of its divisors is an integer number (8005614).

Almost surely, 2^21348302 is an apocalyptic number.

21348302 is a deficient number, since it is larger than the sum of its proper divisors (10674154).

21348302 is a wasteful number, since it uses less digits than its factorization.

21348302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674153.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 21348302 is about 4620.4222750740. The cubic root of 21348302 is about 277.4093614110.

The spelling of 21348302 in words is "twenty-one million, three hundred forty-eight thousand, three hundred two".