22387361 has 4 divisors (see below), whose sum is σ = 22460592. Its totient is φ = 22314132.

The previous prime is 22387297. The next prime is 22387381. The reversal of 22387361 is 16378322.

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: 16378322 = 2 ⋅8189161.

It is a cyclic number.

It is not a de Polignac number, because 22387361 - 2⁶ = 22387297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22387381) 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, 36155 + ... + 36768.

It is an arithmetic number, because the mean of its divisors is an integer number (5615148).

Almost surely, 2^22387361 is an apocalyptic number.

It is an amenable number.

22387361 is a deficient number, since it is larger than the sum of its proper divisors (73231).

22387361 is an equidigital number, since it uses as much as digits as its factorization.

22387361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73230.

The product of its digits is 12096, while the sum is 32.

The square root of 22387361 is about 4731.5283999993. The cubic root of 22387361 is about 281.8389209693.

The spelling of 22387361 in words is "twenty-two million, three hundred eighty-seven thousand, three hundred sixty-one".