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28056108148 = 2219361958711
BaseRepresentation
bin11010001000010001…
…100011110001110100
32200102021111222001121
4122020101203301310
5424424330430043
620515551433324
72012153661445
oct321021436164
980367458047
1028056108148
1110997a3a342
12552bb25844
132851734433
1415021d72cc
15ae314aded
hex688463c74

28056108148 has 24 divisors (see below), whose sum is σ = 49433155520. Its totient is φ = 13932587520.

The previous prime is 28056108089. The next prime is 28056108167. The reversal of 28056108148 is 84180165082.

It is a congruent number.

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, 448513 + ... + 507223.

Almost surely, 228056108148 is an apocalyptic number.

It is an amenable number.

28056108148 is a deficient number, since it is larger than the sum of its proper divisors (21377047372).

28056108148 is a wasteful number, since it uses less digits than its factorization.

28056108148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59527 (or 59525 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The spelling of 28056108148 in words is "twenty-eight billion, fifty-six million, one hundred eight thousand, one hundred forty-eight".

Divisors: 1 2 4 193 386 619 772 1238 2476 58711 117422 119467 234844 238934 477868 11331223 22662446 36342109 45324892 72684218 145368436 7014027037 14028054074 28056108148