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28589230 = 2523124301
BaseRepresentation
bin110110100001…
…1110010101110
31222210111001101
41231003302232
524304323410
62500433314
7465001345
oct155036256
958714041
1028589230
111515756a
1296a883a
135bccb07
143b22b5c
15279ad3a
hex1b43cae

28589230 has 16 divisors (see below), whose sum is σ = 53698464. Its totient is φ = 10938400.

The previous prime is 28589227. The next prime is 28589237. The reversal of 28589230 is 3298582.

It is a self number, because there is not a number n which added to its sum of digits gives 28589230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28589237) 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, 61921 + ... + 62380.

It is an arithmetic number, because the mean of its divisors is an integer number (3356154).

Almost surely, 228589230 is an apocalyptic number.

28589230 is a deficient number, since it is larger than the sum of its proper divisors (25109234).

28589230 is a wasteful number, since it uses less digits than its factorization.

28589230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124331.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28589230 is about 5346.8897501258. The cubic root of 28589230 is about 305.7741865704.

The spelling of 28589230 in words is "twenty-eight million, five hundred eighty-nine thousand, two hundred thirty".

Divisors: 1 2 5 10 23 46 115 230 124301 248602 621505 1243010 2858923 5717846 14294615 28589230