Search a number
-
+
28874826808 = 2317263807281
BaseRepresentation
bin11010111001000100…
…101110010000111000
32202112100002011220221
4122321010232100320
5433113423424213
621133115425424
72041354656352
oct327104562070
982470064827
1028874826808
11112780a5833
12571a155274
13295223c449
14157cc360d2
15b3ee6e38d
hex6b912e438

28874826808 has 32 divisors (see below), whose sum is σ = 57543060960. Its totient is φ = 13536471040.

The previous prime is 28874826797. The next prime is 28874826811. The reversal of 28874826808 is 80862847882.

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, 367873 + ... + 439408.

It is an arithmetic number, because the mean of its divisors is an integer number (1798220655).

Almost surely, 228874826808 is an apocalyptic number.

It is an amenable number.

28874826808 is a deficient number, since it is larger than the sum of its proper divisors (28668234152).

28874826808 is a wasteful number, since it uses less digits than its factorization.

28874826808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807567 (or 807563 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 61.

The spelling of 28874826808 in words is "twenty-eight billion, eight hundred seventy-four million, eight hundred twenty-six thousand, eight hundred eight".

Divisors: 1 2 4 8 17 34 68 136 263 526 1052 2104 4471 8942 17884 35768 807281 1614562 3229124 6458248 13723777 27447554 54895108 109790216 212314903 424629806 849259612 1698519224 3609353351 7218706702 14437413404 28874826808