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28005514746 = 2311424325981
BaseRepresentation
bin11010000101010000…
…100011110111111010
32200021202022112221220
4122011100203313322
5424323402432441
620510543212510
72011000643016
oct320520436772
980252275856
1028005514746
1110971423810
125516ba7136
1328440cbc01
1414d95c7546
15add9a5466
hex685423dfa

28005514746 has 16 divisors (see below), whose sum is σ = 61102941408. Its totient is φ = 8486519600.

The previous prime is 28005514729. The next prime is 28005514753. The reversal of 28005514746 is 64741550082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28005514698 and 28005514707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212162925 + ... + 212163056.

It is an arithmetic number, because the mean of its divisors is an integer number (3818933838).

Almost surely, 228005514746 is an apocalyptic number.

28005514746 is an abundant number, since it is smaller than the sum of its proper divisors (33097426662).

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

28005514746 is a wasteful number, since it uses less digits than its factorization.

28005514746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424325997.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 28005514746 in words is "twenty-eight billion, five million, five hundred fourteen thousand, seven hundred forty-six".

Divisors: 1 2 3 6 11 22 33 66 424325981 848651962 1272977943 2545955886 4667585791 9335171582 14002757373 28005514746