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28055866370 = 257400798091
BaseRepresentation
bin11010001000010000…
…101000110000000010
32200102021001200101212
4122020100220300002
5424424300210440
620515542330122
72012151633530
oct321020506002
980367050355
1028055866370
1110997894724
12552ba29942
13285167b37c
141502173150
15ae30ee465
hex688428c02

28055866370 has 16 divisors (see below), whose sum is σ = 57714925248. Its totient is φ = 9619154160.

The previous prime is 28055866361. The next prime is 28055866429. The reversal of 28055866370 is 7366855082.

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, 200398976 + ... + 200399115.

It is an arithmetic number, because the mean of its divisors is an integer number (3607182828).

Almost surely, 228055866370 is an apocalyptic number.

28055866370 is an abundant number, since it is smaller than the sum of its proper divisors (29659058878).

28055866370 is a wasteful number, since it uses less digits than its factorization.

28055866370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400798105.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 28055866370 in words is "twenty-eight billion, fifty-five million, eight hundred sixty-six thousand, three hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 400798091 801596182 2003990455 2805586637 4007980910 5611173274 14027933185 28055866370