22402064 has 40 divisors (see below), whose sum is σ = 46500000. Its totient is φ = 10423296.

The previous prime is 22402063. The next prime is 22402091. The reversal of 22402064 is 46020422.

It is not an unprimeable number, because it can be changed into a prime (22402063) 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, 17312 + ... + 18560.

It is an arithmetic number, because the mean of its divisors is an integer number (1162500).

Almost surely, 2^22402064 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 22402064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23250000).

22402064 is an abundant number, since it is smaller than the sum of its proper divisors (24097936).

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

22402064 is a wasteful number, since it uses less digits than its factorization.

22402064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22402064 is about 4733.0818712547. The cubic root of 22402064 is about 281.9006071266.

Adding to 22402064 its reverse (46020422), we get a palindrome (68422486).

The spelling of 22402064 in words is "twenty-two million, four hundred two thousand, sixty-four".