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28826760 = 23352331031
BaseRepresentation
bin110110111110…
…1110010001000
32000020112212210
41231331302020
524334424020
62505505120
7500011014
oct155756210
960215783
1028826760
11152a9a76
1297a21a0
135c83c71
143b85544
1527e63e0
hex1b7dc88

28826760 has 64 divisors (see below), whose sum is σ = 86935680. Its totient is φ = 7646720.

The previous prime is 28826741. The next prime is 28826761. The reversal of 28826760 is 6762882.

It is not an unprimeable number, because it can be changed into a prime (28826761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27445 + ... + 28475.

It is an arithmetic number, because the mean of its divisors is an integer number (1358370).

Almost surely, 228826760 is an apocalyptic number.

28826760 is a gapful number since it is divisible by the number (20) 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 28826760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43467840).

28826760 is an abundant number, since it is smaller than the sum of its proper divisors (58108920).

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

28826760 is a wasteful number, since it uses less digits than its factorization.

28826760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28826760 is about 5369.0557829101. The cubic root of 28826760 is about 306.6186807925.

The spelling of 28826760 in words is "twenty-eight million, eight hundred twenty-six thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 233 466 699 932 1031 1165 1398 1864 2062 2330 2796 3093 3495 4124 4660 5155 5592 6186 6990 8248 9320 10310 12372 13980 15465 20620 24744 27960 30930 41240 61860 123720 240223 480446 720669 960892 1201115 1441338 1921784 2402230 2882676 3603345 4804460 5765352 7206690 9608920 14413380 28826760