21482534 has 8 divisors (see below), whose sum is σ = 32393088. Its totient is φ = 10684840.

The previous prime is 21482519. The next prime is 21482557. The reversal of 21482534 is 43528412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21482534² = 922998534122312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21482497 and 21482506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27737 + ... + 28500.

It is an arithmetic number, because the mean of its divisors is an integer number (4049136).

Almost surely, 2^21482534 is an apocalyptic number.

21482534 is a deficient number, since it is larger than the sum of its proper divisors (10910554).

21482534 is a wasteful number, since it uses less digits than its factorization.

21482534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56430.

The product of its digits is 7680, while the sum is 29.

The square root of 21482534 is about 4634.9254578688. The cubic root of 21482534 is about 277.9895705419.

The spelling of 21482534 in words is "twenty-one million, four hundred eighty-two thousand, five hundred thirty-four".