22348381 has 4 divisors (see below), whose sum is σ = 24380064. Its totient is φ = 20316700.

The previous prime is 22348373. The next prime is 22348409. The reversal of 22348381 is 18384322.

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.

It is a cyclic number.

It is not a de Polignac number, because 22348381 - 2³ = 22348373 is a prime.

It is a super-2 number, since 2×22348381² = 998900266642322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22348301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015825 + ... + 1015846.

It is an arithmetic number, because the mean of its divisors is an integer number (6095016).

Almost surely, 2^22348381 is an apocalyptic number.

It is an amenable number.

22348381 is a deficient number, since it is larger than the sum of its proper divisors (2031683).

22348381 is a wasteful number, since it uses less digits than its factorization.

22348381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031682.

The product of its digits is 9216, while the sum is 31.

The square root of 22348381 is about 4727.4074290249. The cubic root of 22348381 is about 281.6752502938.

The spelling of 22348381 in words is "twenty-two million, three hundred forty-eight thousand, three hundred eighty-one".