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28119299 = 132974587
BaseRepresentation
bin110101101000…
…1000100000011
31221220121102112
41223101010003
524144304144
62442405535
7461003315
oct153210403
957817375
1028119299
111496649a
1295008ab
135a96c50
143a3d7b5
15270699e
hex1ad1103

28119299 has 8 divisors (see below), whose sum is σ = 31326960. Its totient is φ = 25060896.

The previous prime is 28119277. The next prime is 28119319. The reversal of 28119299 is 99291182.

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

It is a cyclic number.

It is not a de Polignac number, because 28119299 - 28 = 28119043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28119229) 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, 36917 + ... + 37670.

It is an arithmetic number, because the mean of its divisors is an integer number (3915870).

Almost surely, 228119299 is an apocalyptic number.

28119299 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28119299 is a deficient number, since it is larger than the sum of its proper divisors (3207661).

28119299 is a wasteful number, since it uses less digits than its factorization.

28119299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74629.

The product of its digits is 23328, while the sum is 41.

The square root of 28119299 is about 5302.7633362239. The cubic root of 28119299 is about 304.0895504591.

The spelling of 28119299 in words is "twenty-eight million, one hundred nineteen thousand, two hundred ninety-nine".

Divisors: 1 13 29 377 74587 969631 2163023 28119299