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28869070 = 252886907
BaseRepresentation
bin110111000100…
…0000111001110
32000022200220211
41232020013032
524342302240
62510433034
7500245246
oct156100716
960280824
1028869070
111532883a
12980277a
135c9a2b9
143b96b26
152803bea
hex1b881ce

28869070 has 8 divisors (see below), whose sum is σ = 51964344. Its totient is φ = 11547624.

The previous prime is 28869059. The next prime is 28869073. The reversal of 28869070 is 7096882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28869073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443444 + ... + 1443463.

It is an arithmetic number, because the mean of its divisors is an integer number (6495543).

Almost surely, 228869070 is an apocalyptic number.

28869070 is a deficient number, since it is larger than the sum of its proper divisors (23095274).

28869070 is a wasteful number, since it uses less digits than its factorization.

28869070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886914.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 28869070 is about 5372.9945095822. The cubic root of 28869070 is about 306.7686189584.

The spelling of 28869070 in words is "twenty-eight million, eight hundred sixty-nine thousand, seventy".

Divisors: 1 2 5 10 2886907 5773814 14434535 28869070