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23028625 = 531710837
BaseRepresentation
bin101011111011…
…0001110010001
31121022222100001
41113312032101
521343404000
62141330001
7366511564
oct127661621
947288301
1023028625
1111aa9824
127866901
134a03b09
1430b64db
15204d46a
hex15f6391

23028625 has 16 divisors (see below), whose sum is σ = 30433104. Its totient is φ = 17337600.

The previous prime is 23028619. The next prime is 23028631. The reversal of 23028625 is 52682032.

It is an interprime number because it is at equal distance from previous prime (23028619) and next prime (23028631).

It can be written as a sum of positive squares in 8 ways, for example, as 7568001 + 15460624 = 2751^2 + 3932^2 .

It is not a de Polignac number, because 23028625 - 213 = 23020433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23028593 and 23028602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3294 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (1902069).

Almost surely, 223028625 is an apocalyptic number.

23028625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23028625 is a deficient number, since it is larger than the sum of its proper divisors (7404479).

23028625 is a wasteful number, since it uses less digits than its factorization.

23028625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10869 (or 10859 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 23028625 is about 4798.8149578828. The cubic root of 23028625 is about 284.5046283389.

It can be divided in two parts, 23028 and 625, that added together give a triangular number (23653 = T217).

The spelling of 23028625 in words is "twenty-three million, twenty-eight thousand, six hundred twenty-five".

Divisors: 1 5 17 25 85 125 425 2125 10837 54185 184229 270925 921145 1354625 4605725 23028625