22202730 has 96 divisors (see below), whose sum is σ = 64628928. Its totient is φ = 5241600.

The previous prime is 22202711. The next prime is 22202767. The reversal of 22202730 is 3720222.

22202730 = T₆₀ + T₆₁ + ... + T₅₁₀.

It is a super-2 number, since 2×22202730² = 985922438905800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40317 + ... + 40863.

It is an arithmetic number, because the mean of its divisors is an integer number (673218).

Almost surely, 2^22202730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22202730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32314464).

22202730 is an abundant number, since it is smaller than the sum of its proper divisors (42426198).

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

22202730 is a wasteful number, since it uses less digits than its factorization.

22202730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 22202730 is about 4711.9772919657. The cubic root of 22202730 is about 281.0619958364.

Adding to 22202730 its reverse (3720222), we get a palindrome (25922952).

It can be divided in two parts, 2220 and 2730, that added together give a triangular number (4950 = T₉₉).

The spelling of 22202730 in words is "twenty-two million, two hundred two thousand, seven hundred thirty".