21534682 has 32 divisors (see below), whose sum is σ = 37340352. Its totient is φ = 9225984.

The previous prime is 21534659. The next prime is 21534683. The reversal of 21534682 is 28643512.

It is a super-2 number, since 2×21534682² = 927485057682248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21534683) 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 15 ways as a sum of consecutive naturals, for example, 36393 + ... + 36979.

It is an arithmetic number, because the mean of its divisors is an integer number (1166886).

Almost surely, 2^21534682 is an apocalyptic number.

21534682 is a deficient number, since it is larger than the sum of its proper divisors (15805670).

21534682 is a wasteful number, since it uses less digits than its factorization.

21534682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702.

The product of its digits is 11520, while the sum is 31.

The square root of 21534682 is about 4640.5475969976. The cubic root of 21534682 is about 278.2143250013.

The spelling of 21534682 in words is "twenty-one million, five hundred thirty-four thousand, six hundred eighty-two".