229561020 has 192 divisors, whose sum is σ = 784909440. Its totient is φ = 55351296.

The previous prime is 229561001. The next prime is 229561043. The reversal of 229561020 is 20165922.

229561020 is a `hidden beast` number, since 2 + 29 + 5 + 610 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 371752 + ... + 372368.

It is an arithmetic number, because the mean of its divisors is an integer number (4088070).

Almost surely, 2^229561020 is an apocalyptic number.

229561020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229561020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392454720).

229561020 is an abundant number, since it is smaller than the sum of its proper divisors (555348420).

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

229561020 is a wasteful number, since it uses less digits than its factorization.

229561020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 229561020 is about 15151.2712337942. The cubic root of 229561020 is about 612.3025224823.

The spelling of 229561020 in words is "two hundred twenty-nine million, five hundred sixty-one thousand, twenty".