22780602 has 80 divisors (see below), whose sum is σ = 57020040. Its totient is φ = 6749568.

The previous prime is 22780579. The next prime is 22780607. The reversal of 22780602 is 20608722.

It can be written as a sum of positive squares in 4 ways, for example, as 16475481 + 6305121 = 4059^2 + 2511^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22780607) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60888 + ... + 61260.

Almost surely, 2^22780602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22780602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28510020).

22780602 is an abundant number, since it is smaller than the sum of its proper divisors (34239438).

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

22780602 is a wasteful number, since it uses less digits than its factorization.

22780602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22780602 is about 4772.9028902755. The cubic root of 22780602 is about 283.4795483693.

The spelling of 22780602 in words is "twenty-two million, seven hundred eighty thousand, six hundred two".