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8912028811 = 72534397817
BaseRepresentation
bin10000100110011001…
…01100010010001011
3212000002112222020011
420103030230102023
5121222434410221
64032155412351
7433563665200
oct102314542213
925002488204
108912028811
113863676174
1218887540b7
13ac048b93a
14607875ca7
153726011e1
hex21332c48b

8912028811 has 24 divisors (see below), whose sum is σ = 10588073760. Its totient is φ = 7476723072.

The previous prime is 8912028787. The next prime is 8912028821. The reversal of 8912028811 is 1188202198.

It is a de Polignac number, because none of the positive numbers 2k-8912028811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8912028821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1136175 + ... + 1143991.

It is an arithmetic number, because the mean of its divisors is an integer number (441169740).

Almost surely, 28912028811 is an apocalyptic number.

8912028811 is a deficient number, since it is larger than the sum of its proper divisors (1676044949).

8912028811 is a wasteful number, since it uses less digits than its factorization.

8912028811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8316 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 8912028811 is about 94403.5423646804. The cubic root of 8912028811 is about 2073.2843077091.

The spelling of 8912028811 in words is "eight billion, nine hundred twelve million, twenty-eight thousand, eight hundred eleven".

Divisors: 1 7 49 53 371 439 2597 3073 7817 21511 23267 54719 162869 383033 414301 1140083 2900107 3431663 20300749 24021641 168151487 181878139 1273146973 8912028811