22278048 has 48 divisors (see below), whose sum is σ = 62981856. Its totient is φ = 6854400.

The previous prime is 22278037. The next prime is 22278071. The reversal of 22278048 is 84087222.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×22278048² = 992622845380608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7678 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (1312122).

Almost surely, 2^22278048 is an apocalyptic number.

It is an amenable number.

22278048 is an abundant number, since it is smaller than the sum of its proper divisors (40703808).

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

22278048 is a wasteful number, since it uses less digits than its factorization.

22278048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17877 (or 17869 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 22278048 is about 4719.9627117171. The cubic root of 22278048 is about 281.3794513217.

The spelling of 22278048 in words is "twenty-two million, two hundred seventy-eight thousand, forty-eight".