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8988020 = 2254197113
BaseRepresentation
bin100010010010…
…010101110100
3121220122020122
4202102111310
54300104040
6520351112
7136253066
oct42222564
917818218
108988020
115089918
123015498
131b29072
14129d736
15bc81b5
hex892574

8988020 has 48 divisors (see below), whose sum is σ = 19707408. Its totient is φ = 3440640.

The previous prime is 8988017. The next prime is 8988029. The reversal of 8988020 is 208898.

It can be written as a sum of positive squares in 8 ways, for example, as 3771364 + 5216656 = 1942^2 + 2284^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8988029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79484 + ... + 79596.

It is an arithmetic number, because the mean of its divisors is an integer number (410571).

Almost surely, 28988020 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 8988020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9853704).

8988020 is an abundant number, since it is smaller than the sum of its proper divisors (10719388).

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

8988020 is a wasteful number, since it uses less digits than its factorization.

8988020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 8988020 is about 2998.0026684444. The cubic root of 8988020 is about 207.9160472340.

The spelling of 8988020 in words is "eight million, nine hundred eighty-eight thousand, twenty".

Divisors: 1 2 4 5 10 20 41 82 97 113 164 194 205 226 388 410 452 485 565 820 970 1130 1940 2260 3977 4633 7954 9266 10961 15908 18532 19885 21922 23165 39770 43844 46330 54805 79540 92660 109610 219220 449401 898802 1797604 2247005 4494010 8988020