988647228 has 96 divisors (see below), whose sum is σ = 2634508800. Its totient is φ = 320447232.

The previous prime is 988647221. The next prime is 988647229. The reversal of 988647228 is 822746889.

988647228 is a `hidden beast` number, since 98 + 86 + 472 + 2 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

Its product of digits (3096576) is a multiple of the sum of its prime factors (1008).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988647221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1666900 + ... + 1667492.

It is an arithmetic number, because the mean of its divisors is an integer number (27442800).

Almost surely, 2^988647228 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 988647228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317254400).

988647228 is an abundant number, since it is smaller than the sum of its proper divisors (1645861572).

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

988647228 is a wasteful number, since it uses less digits than its factorization.

988647228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1000 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 988647228 is about 31442.7611382970. The cubic root of 988647228 is about 996.2013310523.

The spelling of 988647228 in words is "nine hundred eighty-eight million, six hundred forty-seven thousand, two hundred twenty-eight".