228025780 has 12 divisors (see below), whose sum is σ = 478854180. Its totient is φ = 91210304.

The previous prime is 228025673. The next prime is 228025799. The reversal of 228025780 is 87520822.

It can be written as a sum of positive squares in 2 ways, for example, as 78110244 + 149915536 = 8838^2 + 12244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5700625 + ... + 5700664.

It is an arithmetic number, because the mean of its divisors is an integer number (39904515).

Almost surely, 2^228025780 is an apocalyptic number.

228025780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228025780 is an abundant number, since it is smaller than the sum of its proper divisors (250828400).

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

228025780 is a wasteful number, since it uses less digits than its factorization.

228025780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401298 (or 11401296 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 228025780 is about 15100.5225075161. The cubic root of 228025780 is about 610.9344988504.

It can be divided in two parts, 22802 and 5780, that added together give a palindrome (28582).

The spelling of 228025780 in words is "two hundred twenty-eight million, twenty-five thousand, seven hundred eighty".