21341260 has 12 divisors (see below), whose sum is σ = 44816688. Its totient is φ = 8536496.

The previous prime is 21341249. The next prime is 21341317. The reversal of 21341260 is 6214312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533512 + ... + 533551.

It is an arithmetic number, because the mean of its divisors is an integer number (3734724).

Almost surely, 2^21341260 is an apocalyptic number.

21341260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21341260 is an abundant number, since it is smaller than the sum of its proper divisors (23475428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21341260 is a wasteful number, since it uses less digits than its factorization.

21341260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067072 (or 1067070 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 21341260 is about 4619.6601606612. The cubic root of 21341260 is about 277.3788557598.

Adding to 21341260 its reverse (6214312), we get a palindrome (27555572).

The spelling of 21341260 in words is "twenty-one million, three hundred forty-one thousand, two hundred sixty".