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28268046 = 2321570447
BaseRepresentation
bin110101111010…
…1011000001110
31222012011110200
41223311120032
524214034141
62445514330
7462163062
oct153653016
958164420
1028268046
1114a58224
1295729a6
135b19871
143a7baa2
152735ab6
hex1af560e

28268046 has 12 divisors (see below), whose sum is σ = 61247472. Its totient is φ = 9422676.

The previous prime is 28268033. The next prime is 28268047. The reversal of 28268046 is 64086282.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28268046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28268047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785206 + ... + 785241.

It is an arithmetic number, because the mean of its divisors is an integer number (5103956).

Almost surely, 228268046 is an apocalyptic number.

28268046 is an abundant number, since it is smaller than the sum of its proper divisors (32979426).

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

28268046 is a wasteful number, since it uses less digits than its factorization.

28268046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570455 (or 1570452 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 28268046 is about 5316.7702602238. The cubic root of 28268046 is about 304.6248042518.

The spelling of 28268046 in words is "twenty-eight million, two hundred sixty-eight thousand, forty-six".

Divisors: 1 2 3 6 9 18 1570447 3140894 4711341 9422682 14134023 28268046