22361664 has 168 divisors, whose sum is σ = 69868288. Its totient is φ = 6266880.

The previous prime is 22361657. The next prime is 22361671. The reversal of 22361664 is 46616322.

It is an interprime number because it is at equal distance from previous prime (22361657) and next prime (22361671).

It is a nude number because it is divisible by every one of its digits.

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, 721329 + ... + 721359.

Almost surely, 2^22361664 is an apocalyptic number.

22361664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22361664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34934144).

22361664 is an abundant number, since it is smaller than the sum of its proper divisors (47506624).

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

22361664 is a wasteful number, since it uses less digits than its factorization.

22361664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 66 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 22361664 is about 4728.8121129941. The cubic root of 22361664 is about 281.7310448101.

Adding to 22361664 its reverse (46616322), we get a palindrome (68977986).

The spelling of 22361664 in words is "twenty-two million, three hundred sixty-one thousand, six hundred sixty-four".