21349483 has 16 divisors (see below), whose sum is σ = 23587840. Its totient is φ = 19245600.

The previous prime is 21349459. The next prime is 21349511. The reversal of 21349483 is 38494312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21349483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21349403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39193 + ... + 39733.

It is an arithmetic number, because the mean of its divisors is an integer number (1474240).

Almost surely, 2^21349483 is an apocalyptic number.

21349483 is a deficient number, since it is larger than the sum of its proper divisors (2238357).

21349483 is a wasteful number, since it uses less digits than its factorization.

21349483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its digits is 20736, while the sum is 34.

The square root of 21349483 is about 4620.5500754780. The cubic root of 21349483 is about 277.4144767970.

The spelling of 21349483 in words is "twenty-one million, three hundred forty-nine thousand, four hundred eighty-three".