22878736 has 60 divisors (see below), whose sum is σ = 49747932. Its totient is φ = 10156032.

The previous prime is 22878727. The next prime is 22878743. The reversal of 22878736 is 63787822.

It can be written as a sum of positive squares in 2 ways, for example, as 11182336 + 11696400 = 3344^2 + 3420^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22878692 and 22878701.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98076 + ... + 98308.

Almost surely, 2^22878736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22878736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24873966).

22878736 is an abundant number, since it is smaller than the sum of its proper divisors (26869196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22878736 is a wasteful number, since it uses less digits than its factorization.

22878736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 271 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 22878736 is about 4783.1721691781. The cubic root of 22878736 is about 283.8860218423.

The spelling of 22878736 in words is "twenty-two million, eight hundred seventy-eight thousand, seven hundred thirty-six".