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28927395 = 335724373
BaseRepresentation
bin110111001011…
…0010110100011
32000102122221000
41232112112203
524401134040
62512003043
7500610300
oct156262643
960378830
1028927395
1115368642
129830483
135cbaa03
143bb00a7
152816130
hex1b965a3

28927395 has 48 divisors (see below), whose sum is σ = 59836320. Its totient is φ = 13220928.

The previous prime is 28927373. The next prime is 28927397. The reversal of 28927395 is 59372982.

It is not a de Polignac number, because 28927395 - 27 = 28927267 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28927395.

It is not an unprimeable number, because it can be changed into a prime (28927397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4429 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (1246590).

Almost surely, 228927395 is an apocalyptic number.

28927395 is an abundant number, since it is smaller than the sum of its proper divisors (30908925).

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

28927395 is a wasteful number, since it uses less digits than its factorization.

28927395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401 (or 4388 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28927395 is about 5378.4193774751. The cubic root of 28927395 is about 306.9750710977.

The spelling of 28927395 in words is "twenty-eight million, nine hundred twenty-seven thousand, three hundred ninety-five".

Divisors: 1 3 5 7 9 15 21 27 35 45 49 63 105 135 147 189 245 315 441 735 945 1323 2205 4373 6615 13119 21865 30611 39357 65595 91833 118071 153055 196785 214277 275499 459165 590355 642831 826497 1071385 1377495 1928493 3214155 4132485 5785479 9642465 28927395