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28496448 = 263423239
BaseRepresentation
bin110110010110…
…1001001000000
31222121202210000
41230231021000
524243341243
62454440000
7464134011
oct154551100
958552700
1028496448
11150a3892
129663000
135b99806
15277d5d3
hex1b2d240

28496448 has 140 divisors (see below), whose sum is σ = 88513920. Its totient is φ = 9047808.

The previous prime is 28496441. The next prime is 28496467. The reversal of 28496448 is 84469482.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (28496441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119113 + ... + 119351.

Almost surely, 228496448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28496448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44256960).

28496448 is an abundant number, since it is smaller than the sum of its proper divisors (60017472).

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

28496448 is a wasteful number, since it uses less digits than its factorization.

28496448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 267 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28496448 is about 5338.2064403693. The cubic root of 28496448 is about 305.4430468770.

The spelling of 28496448 in words is "twenty-eight million, four hundred ninety-six thousand, four hundred forty-eight".