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28662368 = 257199643
BaseRepresentation
bin110110101010…
…1101001100000
31222221012101012
41231111221200
524314143433
62502200052
7465424520
oct155255140
958835335
1028662368
11151a7509
129723028
135c271a7
143b41680
1527b2848
hex1b55a60

28662368 has 48 divisors (see below), whose sum is σ = 64915200. Its totient is φ = 12203136.

The previous prime is 28662343. The next prime is 28662373. The reversal of 28662368 is 86326682.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44255 + ... + 44897.

It is an arithmetic number, because the mean of its divisors is an integer number (1352400).

Almost surely, 228662368 is an apocalyptic number.

28662368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28662368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32457600).

28662368 is an abundant number, since it is smaller than the sum of its proper divisors (36252832).

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

28662368 is a wasteful number, since it uses less digits than its factorization.

28662368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 851 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 28662368 is about 5353.7246847405. The cubic root of 28662368 is about 306.0347120546.

The spelling of 28662368 in words is "twenty-eight million, six hundred sixty-two thousand, three hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 199 224 398 643 796 1286 1393 1592 2572 2786 3184 4501 5144 5572 6368 9002 10288 11144 18004 20576 22288 36008 44576 72016 127957 144032 255914 511828 895699 1023656 1791398 2047312 3582796 4094624 7165592 14331184 28662368