21534862 has 8 divisors (see below), whose sum is σ = 32588496. Its totient is φ = 10672032.

The previous prime is 21534841. The next prime is 21534889. The reversal of 21534862 is 26843512.

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

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, 47418 + ... + 47869.

It is an arithmetic number, because the mean of its divisors is an integer number (4073562).

Almost surely, 2^21534862 is an apocalyptic number.

21534862 is a deficient number, since it is larger than the sum of its proper divisors (11053634).

21534862 is a wasteful number, since it uses less digits than its factorization.

21534862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95402.

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

The square root of 21534862 is about 4640.5669912199. The cubic root of 21534862 is about 278.2151001607.

The spelling of 21534862 in words is "twenty-one million, five hundred thirty-four thousand, eight hundred sixty-two".