22145403 has 12 divisors (see below), whose sum is σ = 34348200. Its totient is φ = 12654432.

The previous prime is 22145363. The next prime is 22145411. The reversal of 22145403 is 30454122.

It is a de Polignac number, because none of the positive numbers 2^k-22145403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22145403.

It is not an unprimeable number, because it can be changed into a prime (22145503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75178 + ... + 75471.

It is an arithmetic number, because the mean of its divisors is an integer number (2862350).

Almost surely, 2^22145403 is an apocalyptic number.

22145403 is a deficient number, since it is larger than the sum of its proper divisors (12202797).

22145403 is a wasteful number, since it uses less digits than its factorization.

22145403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150666 (or 150659 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22145403 is about 4705.8902452140. The cubic root of 22145403 is about 280.8198885475.

Adding to 22145403 its reverse (30454122), we get a palindrome (52599525).

The spelling of 22145403 in words is "twenty-two million, one hundred forty-five thousand, four hundred three".