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1428554868 = 2231346719609
BaseRepresentation
bin101010100100110…
…0000010001110100
310200120002002212120
41111021200101310
510411202223433
6353430515540
750254341666
oct12511402164
93616062776
101428554868
11673422464
1233a505bb0
13199c68a50
14d7a26536
15856357b3
hex55260474

1428554868 has 48 divisors (see below), whose sum is σ = 3597572160. Its totient is φ = 438591744.

The previous prime is 1428554857. The next prime is 1428554873. The reversal of 1428554868 is 8684558241.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1428554868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63048 + ... + 82656.

It is an arithmetic number, because the mean of its divisors is an integer number (74949420).

Almost surely, 21428554868 is an apocalyptic number.

It is an amenable number.

1428554868 is an abundant number, since it is smaller than the sum of its proper divisors (2169017292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428554868 is a wasteful number, since it uses less digits than its factorization.

1428554868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20096 (or 20094 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 51.

The square root of 1428554868 is about 37796.2282245200. The cubic root of 1428554868 is about 1126.2435284548.

The spelling of 1428554868 in words is "one billion, four hundred twenty-eight million, five hundred fifty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 467 934 1401 1868 2802 5604 6071 12142 18213 19609 24284 36426 39218 58827 72852 78436 117654 235308 254917 509834 764751 1019668 1529502 3059004 9157403 18314806 27472209 36629612 54944418 109888836 119046239 238092478 357138717 476184956 714277434 1428554868