22145130 has 64 divisors (see below), whose sum is σ = 67495680. Its totient is φ = 5061312.

The previous prime is 22145111. The next prime is 22145141. The reversal of 22145130 is 3154122.

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 31 ways as a sum of consecutive naturals, for example, 3969 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^22145130 is an apocalyptic number.

22145130 is an abundant number, since it is smaller than the sum of its proper divisors (45350550).

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

22145130 is a wasteful number, since it uses less digits than its factorization.

22145130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11740 (or 11734 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22145130 is about 4705.8612389232. The cubic root of 22145130 is about 280.8187345963.

Adding to 22145130 its reverse (3154122), we get a palindrome (25299252).

The spelling of 22145130 in words is "twenty-two million, one hundred forty-five thousand, one hundred thirty".