229742220 has 48 divisors (see below), whose sum is σ = 645039360. Its totient is φ = 61096896.

The previous prime is 229742203. The next prime is 229742347. The reversal of 229742220 is 22247922.

229742220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17689 + ... + 27791.

It is an arithmetic number, because the mean of its divisors is an integer number (13438320).

Almost surely, 2^229742220 is an apocalyptic number.

229742220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229742220 is an abundant number, since it is smaller than the sum of its proper divisors (415297140).

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

229742220 is a wasteful number, since it uses less digits than its factorization.

229742220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494 (or 10492 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 229742220 is about 15157.2497505319. The cubic root of 229742220 is about 612.4635835631.

The spelling of 229742220 in words is "two hundred twenty-nine million, seven hundred forty-two thousand, two hundred twenty".