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28854956 = 22135231061
BaseRepresentation
bin110111000010…
…0101010101100
32000021222120002
41232010222230
524341324311
62510243432
7500156144
oct156045254
960258502
1028854956
1115319179
1297b6578
135c93a50
143b91924
1527ee93b
hex1b84aac

28854956 has 24 divisors (see below), whose sum is σ = 54535824. Its totient is φ = 13279680.

The previous prime is 28854941. The next prime is 28854961. The reversal of 28854956 is 65945882.

It is a self number, because there is not a number n which added to its sum of digits gives 28854956.

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, 26666 + ... + 27726.

It is an arithmetic number, because the mean of its divisors is an integer number (2272326).

Almost surely, 228854956 is an apocalyptic number.

28854956 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28854956 is a deficient number, since it is larger than the sum of its proper divisors (25680868).

28854956 is a wasteful number, since it uses less digits than its factorization.

28854956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601 (or 1599 counting only the distinct ones).

The product of its digits is 691200, while the sum is 47.

The square root of 28854956 is about 5371.6809287224. The cubic root of 28854956 is about 306.7186180627.

The spelling of 28854956 in words is "twenty-eight million, eight hundred fifty-four thousand, nine hundred fifty-six".

Divisors: 1 2 4 13 26 52 523 1046 1061 2092 2122 4244 6799 13598 13793 27196 27586 55172 554903 1109806 2219612 7213739 14427478 28854956