22378789 has 8 divisors (see below), whose sum is σ = 23653440. Its totient is φ = 21113856.

The previous prime is 22378787. The next prime is 22378799. The reversal of 22378789 is 98787322.

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 22378789 - 2¹ = 22378787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22378787) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2592 + ... + 7174.

It is an arithmetic number, because the mean of its divisors is an integer number (2956680).

Almost surely, 2^22378789 is an apocalyptic number.

It is an amenable number.

22378789 is a deficient number, since it is larger than the sum of its proper divisors (1274651).

22378789 is a wasteful number, since it uses less digits than its factorization.

22378789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859.

The product of its digits is 338688, while the sum is 46.

The square root of 22378789 is about 4730.6224748969. The cubic root of 22378789 is about 281.8029448420.

It can be divided in two parts, 2237 and 8789, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 22378789 in words is "twenty-two million, three hundred seventy-eight thousand, seven hundred eighty-nine".