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28851200 = 210527223
BaseRepresentation
bin110111000001…
…1110000000000
32000021210101222
41232003300000
524341214300
62510214212
7500142200
oct156036000
960253358
1028851200
1115316374
1297b4368
135c92121
143b90400
1527ed785
hex1b83c00

28851200 has 198 divisors, whose sum is σ = 86809176. Its totient is φ = 9461760.

The previous prime is 28851197. The next prime is 28851217. The reversal of 28851200 is 215882.

It is a self number, because there is not a number n which added to its sum of digits gives 28851200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1254389 + ... + 1254411.

Almost surely, 228851200 is an apocalyptic number.

28851200 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 28851200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43404588).

28851200 is an abundant number, since it is smaller than the sum of its proper divisors (57957976).

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

28851200 is a wasteful number, since it uses less digits than its factorization.

28851200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 28851200 is about 5371.3313061102. The cubic root of 28851200 is about 306.7053091402.

It can be divided in two parts, 288 and 51200, that multiplied together give a square (14745600 = 38402).

The spelling of 28851200 in words is "twenty-eight million, eight hundred fifty-one thousand, two hundred".