228099078 has 40 divisors (see below), whose sum is σ = 513389448. Its totient is φ = 75694176.

The previous prime is 228099077. The next prime is 228099101. The reversal of 228099078 is 870990822.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228099077) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34725 + ... + 40767.

Almost surely, 2^228099078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228099078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256694724).

228099078 is an abundant number, since it is smaller than the sum of its proper divisors (285290370).

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

228099078 is a wasteful number, since it uses less digits than its factorization.

228099078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 228099078 is about 15102.9493146206. The cubic root of 228099078 is about 610.9999526770. Note that the first 4 decimals are identical.

The spelling of 228099078 in words is "two hundred twenty-eight million, ninety-nine thousand, seventy-eight".