228569780 has 12 divisors (see below), whose sum is σ = 479996580. Its totient is φ = 91427904.

The previous prime is 228569771. The next prime is 228569827. The reversal of 228569780 is 87965822.

It can be written as a sum of positive squares in 2 ways, for example, as 28686736 + 199883044 = 5356^2 + 14138^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5714225 + ... + 5714264.

It is an arithmetic number, because the mean of its divisors is an integer number (39999715).

Almost surely, 2^228569780 is an apocalyptic number.

228569780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228569780 is an abundant number, since it is smaller than the sum of its proper divisors (251426800).

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

228569780 is a wasteful number, since it uses less digits than its factorization.

228569780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428498 (or 11428496 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 228569780 is about 15118.5243988955. The cubic root of 228569780 is about 611.4199475032.

The spelling of 228569780 in words is "two hundred twenty-eight million, five hundred sixty-nine thousand, seven hundred eighty".