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28495254 = 2337472731
BaseRepresentation
bin110110010110…
…0110110010110
31222121201010210
41230230312112
524243322004
62454430250
7464130354
oct154546626
958551123
1028495254
11150a29a7
129662386
135b990c8
143ada7d4
15277d089
hex1b2cd96

28495254 has 32 divisors (see below), whose sum is σ = 59798016. Its totient is φ = 9041760.

The previous prime is 28495249. The next prime is 28495303. The reversal of 28495254 is 45259482.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9069 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (1868688).

Almost surely, 228495254 is an apocalyptic number.

28495254 is an abundant number, since it is smaller than the sum of its proper divisors (31302762).

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

28495254 is a wasteful number, since it uses less digits than its factorization.

28495254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820.

The product of its digits is 115200, while the sum is 39.

The square root of 28495254 is about 5338.0946038826. The cubic root of 28495254 is about 305.4387808004.

The spelling of 28495254 in words is "twenty-eight million, four hundred ninety-five thousand, two hundred fifty-four".

Divisors: 1 2 3 6 37 47 74 94 111 141 222 282 1739 2731 3478 5217 5462 8193 10434 16386 101047 128357 202094 256714 303141 385071 606282 770142 4749209 9498418 14247627 28495254