22320542 has 8 divisors (see below), whose sum is σ = 33518016. Its totient is φ = 11147872.

The previous prime is 22320503. The next prime is 22320559. The reversal of 22320542 is 24502322.

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

It is a super-3 number, since 3×22320542³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3758 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (4189752).

Almost surely, 2^22320542 is an apocalyptic number.

22320542 is a deficient number, since it is larger than the sum of its proper divisors (11197474).

22320542 is a wasteful number, since it uses less digits than its factorization.

22320542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22320542 is about 4724.4620857829. The cubic root of 22320542 is about 281.5582423312.

Adding to 22320542 its reverse (24502322), we get a palindrome (46822864).

The spelling of 22320542 in words is "twenty-two million, three hundred twenty thousand, five hundred forty-two".