21074348 has 24 divisors (see below), whose sum is σ = 38647392. Its totient is φ = 10036224.

The previous prime is 21074323. The next prime is 21074353. The reversal of 21074348 is 84347012.

It is a self number, because there is not a number n which added to its sum of digits gives 21074348.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36236 + ... + 36812.

It is an arithmetic number, because the mean of its divisors is an integer number (1610308).

Almost surely, 2^21074348 is an apocalyptic number.

It is an amenable number.

21074348 is a deficient number, since it is larger than the sum of its proper divisors (17573044).

21074348 is a wasteful number, since it uses less digits than its factorization.

21074348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 21074348 is about 4590.6805595685. The cubic root of 21074348 is about 276.2176222436.

The spelling of 21074348 in words is "twenty-one million, seventy-four thousand, three hundred forty-eight".