21034968 has 32 divisors (see below), whose sum is σ = 53872560. Its totient is φ = 6840320.

The previous prime is 21034963. The next prime is 21034973. The reversal of 21034968 is 86943012.

It is an interprime number because it is at equal distance from previous prime (21034963) and next prime (21034973).

It is a super-2 number, since 2×21034968² = 884939757522048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034963) 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 7 ways as a sum of consecutive naturals, for example, 9705 + ... + 11672.

Almost surely, 2^21034968 is an apocalyptic number.

It is an amenable number.

21034968 is an abundant number, since it is smaller than the sum of its proper divisors (32837592).

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

21034968 is a wasteful number, since it uses less digits than its factorization.

21034968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21427 (or 21423 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 21034968 is about 4586.3894296058. The cubic root of 21034968 is about 276.0454661498.

The spelling of 21034968 in words is "twenty-one million, thirty-four thousand, nine hundred sixty-eight".