21622614 has 16 divisors (see below), whose sum is σ = 46571952. Its totient is φ = 6653088.

The previous prime is 21622613. The next prime is 21622631. The reversal of 21622614 is 41622612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21622613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138529 + ... + 138684.

It is an arithmetic number, because the mean of its divisors is an integer number (2910747).

Almost surely, 2^21622614 is an apocalyptic number.

21622614 is an abundant number, since it is smaller than the sum of its proper divisors (24949338).

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

21622614 is a wasteful number, since it uses less digits than its factorization.

21622614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277231.

The product of its digits is 1152, while the sum is 24.

The square root of 21622614 is about 4650.0122580484. The cubic root of 21622614 is about 278.5924858319.

The spelling of 21622614 in words is "twenty-one million, six hundred twenty-two thousand, six hundred fourteen".