21417348 has 24 divisors (see below), whose sum is σ = 52913952. Its totient is φ = 6719104.

The previous prime is 21417343. The next prime is 21417349. The reversal of 21417348 is 84371412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21417343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52290 + ... + 52697.

It is an arithmetic number, because the mean of its divisors is an integer number (2204748).

Almost surely, 2^21417348 is an apocalyptic number.

It is an amenable number.

21417348 is an abundant number, since it is smaller than the sum of its proper divisors (31496604).

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

21417348 is a wasteful number, since it uses less digits than its factorization.

21417348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105011 (or 105009 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 21417348 is about 4627.8880712481. Note that the first 3 decimals coincide. The cubic root of 21417348 is about 277.7081110742.

The spelling of 21417348 in words is "twenty-one million, four hundred seventeen thousand, three hundred forty-eight".