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28483025 = 521139321
BaseRepresentation
bin110110010100…
…1110111010001
31222121002100212
41230221313101
524242424100
62454253505
7464046614
oct154516721
958532325
1028483025
111509479a
129657295
135b9367c
143ad617b
152779635
hex1b29dd1

28483025 has 6 divisors (see below), whose sum is σ = 35318982. Its totient is φ = 22786400.

The previous prime is 28482997. The next prime is 28483031. The reversal of 28483025 is 52038482.

28483025 = T1497 + T1498 + ... + T1521.

It can be written as a sum of positive squares in 3 ways, for example, as 8133904 + 20349121 = 2852^2 + 4511^2 .

It is not a de Polignac number, because 28483025 - 210 = 28482001 is a prime.

It is a super-2 number, since 2×284830252 = 1622565426301250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28482982 and 28483000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569636 + ... + 569685.

It is an arithmetic number, because the mean of its divisors is an integer number (5886497).

Almost surely, 228483025 is an apocalyptic number.

28483025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28483025 is a deficient number, since it is larger than the sum of its proper divisors (6835957).

28483025 is a wasteful number, since it uses less digits than its factorization.

28483025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139331 (or 1139326 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28483025 is about 5336.9490347951. The cubic root of 28483025 is about 305.3950805955.

The spelling of 28483025 in words is "twenty-eight million, four hundred eighty-three thousand, twenty-five".

Divisors: 1 5 25 1139321 5696605 28483025