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3128000000 = 29561723
BaseRepresentation
bin1011101001110001…
…0111111000000000
322001222212212022212
42322130113320000
522401232000000
61234215521252
7140341363346
oct27234277000
98058785285
103128000000
111365746774
12733689228
133ab07c898
14219605996
15134929c35
hexba717e00

3128000000 has 280 divisors, whose sum is σ = 8631452016. Its totient is φ = 1126400000.

The previous prime is 3127999993. The next prime is 3128000009. The reversal of 3128000000 is 8213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128000009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 135999989 + ... + 136000011.

Almost surely, 23128000000 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 3128000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4315726008).

3128000000 is an abundant number, since it is smaller than the sum of its proper divisors (5503452016).

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

3128000000 is an frugal number, since it uses more digits than its factorization.

3128000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3128000000 is about 55928.5258164383. The cubic root of 3128000000 is about 1462.4765623146.

Adding to 3128000000 its reverse (8213), we get a palindrome (3128008213).

The spelling of 3128000000 in words is "three billion, one hundred twenty-eight million", and thus it is an aban number.