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BaseRepresentation
bin110111000010…
…1100000010000
32000022011021001
41232011200100
524341432014
62510311344
7500202142
oct156054020
960264231
1028858384
1115320805
1297b8554
135c95489
143b92c92
152800974
hex1b85810

28858384 has 45 divisors (see below), whose sum is σ = 60156957. Its totient is φ = 13408512.

The previous prime is 28858363. The next prime is 28858387. The reversal of 28858384 is 48385882.

It is a happy number.

The square root of 28858384 is 5372.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 6390784 = 4740^2 + 2528^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28858387) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 365257 + ... + 365335.

Almost surely, 228858384 is an apocalyptic number.

28858384 is the 5372-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28858384

28858384 is an abundant number, since it is smaller than the sum of its proper divisors (31298573).

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

28858384 is an equidigital number, since it uses as much as digits as its factorization.

28858384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 98 counting only the distinct ones).

The product of its digits is 491520, while the sum is 46.

The cubic root of 28858384 is about 306.7307637497.

The spelling of 28858384 in words is "twenty-eight million, eight hundred fifty-eight thousand, three hundred eighty-four".