22280389 has 4 divisors (see below), whose sum is σ = 22297120. Its totient is φ = 22263660.

The previous prime is 22280383. The next prime is 22280411. The reversal of 22280389 is 98308222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98308222 = 2 ⋅49154111.

It is a cyclic number.

It is not a de Polignac number, because 22280389 - 2¹⁹ = 21756101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6177 + ... + 9094.

It is an arithmetic number, because the mean of its divisors is an integer number (5574280).

Almost surely, 2^22280389 is an apocalyptic number.

It is an amenable number.

22280389 is a deficient number, since it is larger than the sum of its proper divisors (16731).

22280389 is a wasteful number, since it uses less digits than its factorization.

22280389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16730.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 22280389 is about 4720.2106944500. The cubic root of 22280389 is about 281.3893068564.

The spelling of 22280389 in words is "twenty-two million, two hundred eighty thousand, three hundred eighty-nine".