21348130 has 8 divisors (see below), whose sum is σ = 38426652. Its totient is φ = 8539248.

The previous prime is 21348127. The next prime is 21348133. The reversal of 21348130 is 3184312.

It is an interprime number because it is at equal distance from previous prime (21348127) and next prime (21348133).

It can be written as a sum of positive squares in 2 ways, for example, as 21169201 + 178929 = 4601^2 + 423^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21348133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067397 + ... + 1067416.

Almost surely, 2^21348130 is an apocalyptic number.

21348130 is a deficient number, since it is larger than the sum of its proper divisors (17078522).

21348130 is a wasteful number, since it uses less digits than its factorization.

21348130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134820.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 21348130 is about 4620.4036620192. The cubic root of 21348130 is about 277.4086163941.

The spelling of 21348130 in words is "twenty-one million, three hundred forty-eight thousand, one hundred thirty".