22991342 has 8 divisors (see below), whose sum is σ = 37622232. Its totient is φ = 10450600.

The previous prime is 22991333. The next prime is 22991357. The reversal of 22991342 is 24319922.

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

It is a junction number, because it is equal to n+sod(n) for n = 22991299 and 22991308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522509 + ... + 522552.

It is an arithmetic number, because the mean of its divisors is an integer number (4702779).

Almost surely, 2^22991342 is an apocalyptic number.

22991342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22991342 is a deficient number, since it is larger than the sum of its proper divisors (14630890).

22991342 is a wasteful number, since it uses less digits than its factorization.

22991342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045074.

The product of its digits is 7776, while the sum is 32.

The square root of 22991342 is about 4794.9287794502. The cubic root of 22991342 is about 284.3510091583.

The spelling of 22991342 in words is "twenty-two million, nine hundred ninety-one thousand, three hundred forty-two".