22878733 has 4 divisors (see below), whose sum is σ = 22888800. Its totient is φ = 22868668.

The previous prime is 22878727. The next prime is 22878743. The reversal of 22878733 is 33787822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33787822 = 2 ⋅16893911.

It is a cyclic number.

It is not a de Polignac number, because 22878733 - 2⁹ = 22878221 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 (22878743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (5722200).

Almost surely, 2^22878733 is an apocalyptic number.

It is an amenable number.

22878733 is a deficient number, since it is larger than the sum of its proper divisors (10067).

22878733 is an equidigital number, since it uses as much as digits as its factorization.

22878733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066.

The product of its digits is 112896, while the sum is 40.

The square root of 22878733 is about 4783.1718555787. The cubic root of 22878733 is about 283.8860094340.

It can be divided in two parts, 228 and 78733, that added together give a square (78961 = 281²).

The spelling of 22878733 in words is "twenty-two million, eight hundred seventy-eight thousand, seven hundred thirty-three".