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28851155 = 510157131
BaseRepresentation
bin110111000001…
…1101111010011
32000021210100022
41232003233103
524341214110
62510214055
7500142104
oct156035723
960253308
1028851155
1115316333
1297b432b
135c920b8
143b903ab
1527ed755
hex1b83bd3

28851155 has 8 divisors (see below), whose sum is σ = 34964784. Its totient is φ = 22852000.

The previous prime is 28851149. The next prime is 28851161. The reversal of 28851155 is 55115882.

It is an interprime number because it is at equal distance from previous prime (28851149) and next prime (28851161).

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

It is not a de Polignac number, because 28851155 - 210 = 28850131 is a prime.

It is a Duffinian 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, 28061 + ... + 29070.

It is an arithmetic number, because the mean of its divisors is an integer number (4370598).

Almost surely, 228851155 is an apocalyptic number.

28851155 is a deficient number, since it is larger than the sum of its proper divisors (6113629).

28851155 is a wasteful number, since it uses less digits than its factorization.

28851155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57237.

The product of its digits is 16000, while the sum is 35.

The square root of 28851155 is about 5371.3271172030. The cubic root of 28851155 is about 306.7051496812.

The spelling of 28851155 in words is "twenty-eight million, eight hundred fifty-one thousand, one hundred fifty-five".

Divisors: 1 5 101 505 57131 285655 5770231 28851155