228280770 has 96 divisors (see below), whose sum is σ = 609073920. Its totient is φ = 59304960.

The previous prime is 228280769. The next prime is 228280781. The reversal of 228280770 is 77082822.

228280770 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228280770² = 104224219903585800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 689505 + ... + 689835.

It is an arithmetic number, because the mean of its divisors is an integer number (6344520).

Almost surely, 2^228280770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228280770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304536960).

228280770 is an abundant number, since it is smaller than the sum of its proper divisors (380793150).

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

228280770 is a wasteful number, since it uses less digits than its factorization.

228280770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 228280770 is about 15108.9632337894. The cubic root of 228280770 is about 611.1621400058.

The spelling of 228280770 in words is "two hundred twenty-eight million, two hundred eighty thousand, seven hundred seventy".