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28070807084 = 2219507359753
BaseRepresentation
bin11010001001001001…
…101000011000101100
32200110022011202012122
4122021021220120230
5424442111311314
620521234452112
72012422631465
oct321111503054
980408152178
1028070807084
11109a5269921
125534a34038
1328547aca28
141504141d6c
15ae45a128e
hex68926862c

28070807084 has 12 divisors (see below), whose sum is σ = 49126567224. Its totient is φ = 14034645024.

The previous prime is 28070807077. The next prime is 28070807113. The reversal of 28070807084 is 48070807082.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101849 + ... + 257904.

It is an arithmetic number, because the mean of its divisors is an integer number (4093880602).

Almost surely, 228070807084 is an apocalyptic number.

It is an amenable number.

28070807084 is a deficient number, since it is larger than the sum of its proper divisors (21055760140).

28070807084 is a wasteful number, since it uses less digits than its factorization.

28070807084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379264 (or 379262 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 28070807084 in words is "twenty-eight billion, seventy million, eight hundred seven thousand, eighty-four".

Divisors: 1 2 4 19507 39014 78028 359753 719506 1439012 7017701771 14035403542 28070807084