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28514089 = 233893187
BaseRepresentation
bin110110011000…
…1011100101001
31222122122222101
41230301130221
524244422324
62455053401
7464236312
oct154613451
958578871
1028514089
111510606a
129671261
135ba4856
143b03609
152783944
hex1b31729

28514089 has 8 divisors (see below), whose sum is σ = 29839680. Its totient is φ = 27195696.

The previous prime is 28514077. The next prime is 28514099. The reversal of 28514089 is 98041582.

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 28514089 - 29 = 28513577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28514009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7354 + ... + 10540.

It is an arithmetic number, because the mean of its divisors is an integer number (3729960).

Almost surely, 228514089 is an apocalyptic number.

It is an amenable number.

28514089 is a deficient number, since it is larger than the sum of its proper divisors (1325591).

28514089 is a wasteful number, since it uses less digits than its factorization.

28514089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 28514089 is about 5339.8585187250. The cubic root of 28514089 is about 305.5060630264.

The spelling of 28514089 in words is "twenty-eight million, five hundred fourteen thousand, eighty-nine".

Divisors: 1 23 389 3187 8947 73301 1239743 28514089