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28965030 = 2355318217
BaseRepresentation
bin110111001111…
…1100010100110
32000111120112220
41232133202212
524403340110
62512453210
7501125103
oct156374246
960446486
1028965030
1115393946
12984a206
136001b93
143bbdaaa
152822370
hex1b9f8a6

28965030 has 32 divisors (see below), whose sum is σ = 70831584. Its totient is φ = 7577856.

The previous prime is 28965029. The next prime is 28965037. The reversal of 28965030 is 3056982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28964982 and 28965000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7519 + ... + 10698.

It is an arithmetic number, because the mean of its divisors is an integer number (2213487).

Almost surely, 228965030 is an apocalyptic number.

28965030 is an abundant number, since it is smaller than the sum of its proper divisors (41866554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28965030 is a wasteful number, since it uses less digits than its factorization.

28965030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18280.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 28965030 is about 5381.9169447326. The cubic root of 28965030 is about 307.1081398860.

The spelling of 28965030 in words is "twenty-eight million, nine hundred sixty-five thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 53 106 159 265 318 530 795 1590 18217 36434 54651 91085 109302 182170 273255 546510 965501 1931002 2896503 4827505 5793006 9655010 14482515 28965030