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28796098580 = 2251489966961
BaseRepresentation
bin11010110100011000…
…011001100000010100
32202022211221101002122
4122310120121200110
5432433300123310
621121224155112
72036410541114
oct326430314024
982284841078
1028796098580
1111237713087
1256b7908a98
13293bb35bb2
1415725c1044
15b380bc555
hex6b4619814

28796098580 has 24 divisors (see below), whose sum is σ = 60512481960. Its totient is φ = 11510691840.

The previous prime is 28796098571. The next prime is 28796098589. The reversal of 28796098580 is 8589069782.

It is an interprime number because it is at equal distance from previous prime (28796098571) and next prime (28796098589).

It can be written as a sum of positive squares in 4 ways, for example, as 6136215556 + 22659883024 = 78334^2 + 150532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28796098589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453701 + ... + 513260.

It is an arithmetic number, because the mean of its divisors is an integer number (2521353415).

Almost surely, 228796098580 is an apocalyptic number.

28796098580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28796098580 is an abundant number, since it is smaller than the sum of its proper divisors (31716383380).

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

28796098580 is a wasteful number, since it uses less digits than its factorization.

28796098580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968459 (or 968457 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 28796098580 in words is "twenty-eight billion, seven hundred ninety-six million, ninety-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 1489 2978 5956 7445 14890 29780 966961 1933922 3867844 4834805 9669610 19339220 1439804929 2879609858 5759219716 7199024645 14398049290 28796098580