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28672190 = 252867219
BaseRepresentation
bin110110101100…
…0000010111110
31222221200211222
41231120002332
524320002230
62502313342
7465465251
oct155300276
958850758
1028672190
1115203928
129728852
135c2b7c1
143b45098
1527b56e5
hex1b580be

28672190 has 8 divisors (see below), whose sum is σ = 51609960. Its totient is φ = 11468872.

The previous prime is 28672177. The next prime is 28672199. The reversal of 28672190 is 9127682.

It is a happy number.

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

It is a super-3 number, since 3×286721903 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 28672190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672199) 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 3 ways as a sum of consecutive naturals, for example, 1433600 + ... + 1433619.

It is an arithmetic number, because the mean of its divisors is an integer number (6451245).

Almost surely, 228672190 is an apocalyptic number.

28672190 is a deficient number, since it is larger than the sum of its proper divisors (22937770).

28672190 is a wasteful number, since it uses less digits than its factorization.

28672190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867226.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 28672190 is about 5354.6419114634. The cubic root of 28672190 is about 306.0696653152.

The spelling of 28672190 in words is "twenty-eight million, six hundred seventy-two thousand, one hundred ninety".

Divisors: 1 2 5 10 2867219 5734438 14336095 28672190