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2988228720 = 2435177379127
BaseRepresentation
bin1011001000011100…
…1100000001110000
321201020212202011210
42302013030001300
522104441304340
61212304040120
7134023345041
oct26207140160
97636782153
102988228720
1112a3860514
126b4903040
13388122699
14204c208c8
1512751b180
hexb21cc070

2988228720 has 320 divisors, whose sum is σ = 10147921920. Its totient is φ = 724598784.

The previous prime is 2988228679. The next prime is 2988228721. The reversal of 2988228720 is 278228892.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2988228720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2988228721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23529297 + ... + 23529423.

It is an arithmetic number, because the mean of its divisors is an integer number (31712256).

Almost surely, 22988228720 is an apocalyptic number.

2988228720 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 2988228720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5073960960).

2988228720 is an abundant number, since it is smaller than the sum of its proper divisors (7159693200).

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

2988228720 is a wasteful number, since it uses less digits than its factorization.

2988228720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 2988228720 is about 54664.6935416270. The cubic root of 2988228720 is about 1440.3607506661.

The spelling of 2988228720 in words is "two billion, nine hundred eighty-eight million, two hundred twenty-eight thousand, seven hundred twenty".