21602214 has 24 divisors (see below), whose sum is σ = 48539400. Its totient is φ = 7200576.

The previous prime is 21602197. The next prime is 21602237. The reversal of 21602214 is 41220612.

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

21602214 is a modest number, since divided by 2214 gives 216 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21739 + ... + 22710.

It is an arithmetic number, because the mean of its divisors is an integer number (2022475).

Almost surely, 2^21602214 is an apocalyptic number.

21602214 is an abundant number, since it is smaller than the sum of its proper divisors (26937186).

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

21602214 is an equidigital number, since it uses as much as digits as its factorization.

21602214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44466 (or 44454 counting only the distinct ones).

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

The square root of 21602214 is about 4647.8181978214. The cubic root of 21602214 is about 278.5048449488.

Adding to 21602214 its reverse (41220612), we get a palindrome (62822826).

The spelling of 21602214 in words is "twenty-one million, six hundred two thousand, two hundred fourteen".