22115398 has 4 divisors (see below), whose sum is σ = 33173100. Its totient is φ = 11057698.

The previous prime is 22115393. The next prime is 22115413. The reversal of 22115398 is 89351122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115393) 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 as a sum of consecutive naturals, namely, 5528848 + ... + 5528851.

It is an arithmetic number, because the mean of its divisors is an integer number (8293275).

Almost surely, 2^22115398 is an apocalyptic number.

22115398 is a deficient number, since it is larger than the sum of its proper divisors (11057702).

22115398 is a wasteful number, since it uses less digits than its factorization.

22115398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057701.

The product of its digits is 4320, while the sum is 31.

The square root of 22115398 is about 4702.7011387074. The cubic root of 22115398 is about 280.6930027839.

The spelling of 22115398 in words is "twenty-two million, one hundred fifteen thousand, three hundred ninety-eight".