229777980 has 24 divisors (see below), whose sum is σ = 643378512. Its totient is φ = 61274112.

The previous prime is 229777973. The next prime is 229777987. The reversal of 229777980 is 89777922.

It is an interprime number because it is at equal distance from previous prime (229777973) and next prime (229777987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229777987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1914757 + ... + 1914876.

It is an arithmetic number, because the mean of its divisors is an integer number (26807438).

Almost surely, 2^229777980 is an apocalyptic number.

229777980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229777980 is an abundant number, since it is smaller than the sum of its proper divisors (413600532).

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

229777980 is a wasteful number, since it uses less digits than its factorization.

229777980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829645 (or 3829643 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 229777980 is about 15158.4293381603. The cubic root of 229777980 is about 612.4953591207.

The spelling of 229777980 in words is "two hundred twenty-nine million, seven hundred seventy-seven thousand, nine hundred eighty".