21480348 has 12 divisors (see below), whose sum is σ = 50120840. Its totient is φ = 7160112.

The previous prime is 21480343. The next prime is 21480353. The reversal of 21480348 is 84308412.

It is an interprime number because it is at equal distance from previous prime (21480343) and next prime (21480353).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21480348² = 922810700402208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21480343) 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, 895003 + ... + 895026.

Almost surely, 2^21480348 is an apocalyptic number.

It is an amenable number.

21480348 is an abundant number, since it is smaller than the sum of its proper divisors (28640492).

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

21480348 is a wasteful number, since it uses less digits than its factorization.

21480348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790036 (or 1790034 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 21480348 is about 4634.6896336217. The cubic root of 21480348 is about 277.9801410861.

The spelling of 21480348 in words is "twenty-one million, four hundred eighty thousand, three hundred forty-eight".