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28130710050 = 233521723137389
BaseRepresentation
bin11010001100101110…
…001001001000100010
32200121110220010122000
4122030232021020202
5430102430210200
620531214424430
72014051042632
oct321456111042
980543803560
1028130710050
1110a26063903
125550b02116
132864024781
14150c0966c2
15ae9985300
hex68cb89222

28130710050 has 384 divisors, whose sum is σ = 86490892800. Its totient is φ = 6686760960.

The previous prime is 28130709979. The next prime is 28130710063. The reversal of 28130710050 is 5001703182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28130709996 and 28130710023.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 72315256 + ... + 72315644.

It is an arithmetic number, because the mean of its divisors is an integer number (225236700).

Almost surely, 228130710050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28130710050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43245446400).

28130710050 is an abundant number, since it is smaller than the sum of its proper divisors (58360182750).

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

28130710050 is a wasteful number, since it uses less digits than its factorization.

28130710050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 28130710050 in words is "twenty-eight billion, one hundred thirty million, seven hundred ten thousand, fifty".