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8028320 = 25550177
BaseRepresentation
bin11110101000000010100000
3120002212210012
4132220002200
54023401240
6444024052
7125145116
oct36500240
916085705
108028320
114593883
122832028
1318812b1
1410cdab6
15a88b65
hex7a80a0

8028320 has 24 divisors (see below), whose sum is σ = 18967284. Its totient is φ = 3211264.

The previous prime is 8028299. The next prime is 8028343. The reversal of 8028320 is 238208.

It can be written as a sum of positive squares in 2 ways, for example, as 7246864 + 781456 = 2692^2 + 884^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24929 + ... + 25248.

Almost surely, 28028320 is an apocalyptic number.

8028320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8028320 is an abundant number, since it is smaller than the sum of its proper divisors (10938964).

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

8028320 is a wasteful number, since it uses less digits than its factorization.

8028320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50192 (or 50184 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8028320 is about 2833.4290179922. The cubic root of 8028320 is about 200.2357220664.

The spelling of 8028320 in words is "eight million, twenty-eight thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 50177 100354 200708 250885 401416 501770 802832 1003540 1605664 2007080 4014160 8028320