21034683 has 6 divisors (see below), whose sum is σ = 30383444. Its totient is φ = 14023116.

The previous prime is 21034669. The next prime is 21034687. The reversal of 21034683 is 38643012.

It is a happy number.

It is not a de Polignac number, because 21034683 - 2⁴ = 21034667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21034687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168585 + ... + 1168602.

Almost surely, 2^21034683 is an apocalyptic number.

21034683 is a deficient number, since it is larger than the sum of its proper divisors (9348761).

21034683 is a wasteful number, since it uses less digits than its factorization.

21034683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337193 (or 2337190 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 21034683 is about 4586.3583593086. The cubic root of 21034683 is about 276.0442194430.

Adding to 21034683 its reverse (38643012), we get a palindrome (59677695).

It can be divided in two parts, 2103 and 4683, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 21034683 in words is "twenty-one million, thirty-four thousand, six hundred eighty-three".