22502381 has 8 divisors (see below), whose sum is σ = 24602400. Its totient is φ = 20411440.

The previous prime is 22502377. The next prime is 22502383. The reversal of 22502381 is 18320522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22502381 - 2² = 22502377 is a prime.

It is a super-2 number, since 2×22502381² = 1012714301338322, 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 (22502383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3590 + ... + 7608.

It is an arithmetic number, because the mean of its divisors is an integer number (3075300).

Almost surely, 2^22502381 is an apocalyptic number.

It is an amenable number.

22502381 is a deficient number, since it is larger than the sum of its proper divisors (2100019).

22502381 is a wasteful number, since it uses less digits than its factorization.

22502381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 22502381 is about 4743.6674630501. The cubic root of 22502381 is about 282.3207665654.

The spelling of 22502381 in words is "twenty-two million, five hundred two thousand, three hundred eighty-one".