22671616 has 72 divisors (see below), whose sum is σ = 50478624. Its totient is φ = 10076160.

The previous prime is 22671613. The next prime is 22671631. The reversal of 22671616 is 61617622.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22671613) 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, 233680 + ... + 233776.

It is an arithmetic number, because the mean of its divisors is an integer number (701092).

Almost surely, 2^22671616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22671616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25239312).

22671616 is an abundant number, since it is smaller than the sum of its proper divisors (27807008).

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

22671616 is an equidigital number, since it uses as much as digits as its factorization.

22671616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 193 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 22671616 is about 4761.4720412914. The cubic root of 22671616 is about 283.0267552025.

It can be divided in two parts, 2267 and 1616, that added together give a palindrome (3883).

The spelling of 22671616 in words is "twenty-two million, six hundred seventy-one thousand, six hundred sixteen".