21348182 has 4 divisors (see below), whose sum is σ = 32022276. Its totient is φ = 10674090.

The previous prime is 21348161. The next prime is 21348203. The reversal of 21348182 is 28184312.

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

It is an interprime number because it is at equal distance from previous prime (21348161) and next prime (21348203).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5337044 + ... + 5337047.

It is an arithmetic number, because the mean of its divisors is an integer number (8005569).

Almost surely, 2^21348182 is an apocalyptic number.

21348182 is a deficient number, since it is larger than the sum of its proper divisors (10674094).

21348182 is a wasteful number, since it uses less digits than its factorization.

21348182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10674093.

The product of its digits is 3072, while the sum is 29.

The square root of 21348182 is about 4620.4092892297. The cubic root of 21348182 is about 277.4088416322.

The spelling of 21348182 in words is "twenty-one million, three hundred forty-eight thousand, one hundred eighty-two".