999960228 has 60 divisors (see below), whose sum is σ = 2626662192. Its totient is φ = 331717680.

The previous prime is 999960163. The next prime is 999960229. The reversal of 999960228 is 822069999.

999960228 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 602 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (999960229) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61051 + ... + 75677.

Almost surely, 2^999960228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999960228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313331096).

999960228 is an abundant number, since it is smaller than the sum of its proper divisors (1626701964).

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

999960228 is a wasteful number, since it uses less digits than its factorization.

999960228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854 (or 14843 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 999960228 is about 31622.1477448955. The cubic root of 999960228 is about 999.9867424909.

The spelling of 999960228 in words is "nine hundred ninety-nine million, nine hundred sixty thousand, two hundred twenty-eight".