22031430 has 16 divisors (see below), whose sum is σ = 52875504. Its totient is φ = 5875040.

The previous prime is 22031423. The next prime is 22031459. The reversal of 22031430 is 3413022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367161 + ... + 367220.

It is an arithmetic number, because the mean of its divisors is an integer number (3304719).

Almost surely, 2^22031430 is an apocalyptic number.

22031430 is an abundant number, since it is smaller than the sum of its proper divisors (30844074).

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

22031430 is a wasteful number, since it uses less digits than its factorization.

22031430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734391.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22031430 is about 4693.7650132916. The cubic root of 22031430 is about 280.3373060812.

Adding to 22031430 its reverse (3413022), we get a palindrome (25444452).

The spelling of 22031430 in words is "twenty-two million, thirty-one thousand, four hundred thirty".