22238723 has 8 divisors (see below), whose sum is σ = 24991008. Its totient is φ = 19635264.

The previous prime is 22238681. The next prime is 22238729. The reversal of 22238723 is 32783222.

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 22238723 - 2¹² = 22234627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22238729) 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 7 ways as a sum of consecutive naturals, for example, 36890 + ... + 37487.

It is an arithmetic number, because the mean of its divisors is an integer number (3123876).

Almost surely, 2^22238723 is an apocalyptic number.

22238723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22238723 is a deficient number, since it is larger than the sum of its proper divisors (2752285).

22238723 is a wasteful number, since it uses less digits than its factorization.

22238723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74413.

The product of its digits is 8064, while the sum is 29.

The square root of 22238723 is about 4715.7950549192. The cubic root of 22238723 is about 281.2137910258.

The spelling of 22238723 in words is "twenty-two million, two hundred thirty-eight thousand, seven hundred twenty-three".