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28698055 = 58216991
BaseRepresentation
bin110110101111…
…0010111000111
32000000000022221
41231132113013
524321314210
62503033211
7465633541
oct155362707
960000287
1028698055
1115221301
12973b807
135c3a4c9
143b50691
1527bd1da
hex1b5e5c7

28698055 has 8 divisors (see below), whose sum is σ = 34484544. Its totient is φ = 22927200.

The previous prime is 28698049. The next prime is 28698067. The reversal of 28698055 is 55089682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28698055 - 27 = 28697927 is a prime.

It is a Duffinian number.

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, 610 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (4310568).

Almost surely, 228698055 is an apocalyptic number.

28698055 is a deficient number, since it is larger than the sum of its proper divisors (5786489).

28698055 is an equidigital number, since it uses as much as digits as its factorization.

28698055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7817.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 28698055 is about 5357.0565612097. The cubic root of 28698055 is about 306.1616721531.

The spelling of 28698055 in words is "twenty-eight million, six hundred ninety-eight thousand, fifty-five".

Divisors: 1 5 821 4105 6991 34955 5739611 28698055