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28030498080 = 25351310314357
BaseRepresentation
bin11010000110101111…
…110111010100100000
32200100111022211122120
4122012233313110200
5424401301414310
620513234504240
72011423205514
oct320657672440
980314284576
1028030498080
11109845380a2
125523435080
132849338650
1414dca4c144
15ae0c8cb70
hex686bf7520

28030498080 has 192 divisors, whose sum is σ = 95202148608. Its totient is φ = 6891540480.

The previous prime is 28030498063. The next prime is 28030498159. The reversal of 28030498080 is 8089403082.

It is a happy number.

It is a super-2 number, since 2×280304980802 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6431262 + ... + 6435618.

It is an arithmetic number, because the mean of its divisors is an integer number (495844524).

Almost surely, 228030498080 is an apocalyptic number.

28030498080 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 28030498080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47601074304).

28030498080 is an abundant number, since it is smaller than the sum of its proper divisors (67171650528).

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

28030498080 is a wasteful number, since it uses less digits than its factorization.

28030498080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5411 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 28030498080 in words is "twenty-eight billion, thirty million, four hundred ninety-eight thousand, eighty".