21534062 has 8 divisors (see below), whose sum is σ = 35237592. Its totient is φ = 9788200.

The previous prime is 21534047. The next prime is 21534067. The reversal of 21534062 is 26043512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21534067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489389 + ... + 489432.

It is an arithmetic number, because the mean of its divisors is an integer number (4404699).

Almost surely, 2^21534062 is an apocalyptic number.

21534062 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21534062 is a deficient number, since it is larger than the sum of its proper divisors (13703530).

21534062 is a wasteful number, since it uses less digits than its factorization.

21534062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978834.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 21534062 is about 4640.4807940557. The cubic root of 21534062 is about 278.2116549744.

Adding to 21534062 its reverse (26043512), we get a palindrome (47577574).

The spelling of 21534062 in words is "twenty-one million, five hundred thirty-four thousand, sixty-two".