21024162 has 48 divisors (see below), whose sum is σ = 48679488. Its totient is φ = 6541920.

The previous prime is 21024137. The next prime is 21024173. The reversal of 21024162 is 26142012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17212 + ... + 18392.

It is an arithmetic number, because the mean of its divisors is an integer number (1014156).

Almost surely, 2^21024162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21024162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24339744).

21024162 is an abundant number, since it is smaller than the sum of its proper divisors (27655326).

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

21024162 is a wasteful number, since it uses less digits than its factorization.

21024162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 21024162 is about 4585.2112274136. The cubic root of 21024162 is about 275.9981883939.

Adding to 21024162 its reverse (26142012), we get a palindrome (47166174).

The spelling of 21024162 in words is "twenty-one million, twenty-four thousand, one hundred sixty-two".