229570820 has 24 divisors (see below), whose sum is σ = 503060544. Its totient is φ = 87835616.

The previous prime is 229570813. The next prime is 229570823. The reversal of 229570820 is 28075922.

It is a super-2 number, since 2×229570820² = 105405522790944800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (229570823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249074 + ... + 249993.

It is an arithmetic number, because the mean of its divisors is an integer number (20960856).

Almost surely, 2^229570820 is an apocalyptic number.

229570820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229570820 is an abundant number, since it is smaller than the sum of its proper divisors (273489724).

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

229570820 is a wasteful number, since it uses less digits than its factorization.

229570820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499099 (or 499097 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 229570820 is about 15151.5946355491. The cubic root of 229570820 is about 612.3112354589.

The spelling of 229570820 in words is "two hundred twenty-nine million, five hundred seventy thousand, eight hundred twenty".