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864025 = 521719107
BaseRepresentation
bin11010010111100011001
31121220012221
43102330121
5210122100
630304041
710226011
oct3227431
91556187
10864025
11540178
12358021
13243376
14186c41
1512101a
hexd2f19

864025 has 24 divisors (see below), whose sum is σ = 1205280. Its totient is φ = 610560.

The previous prime is 864013. The next prime is 864029. The reversal of 864025 is 520468.

It is not a de Polignac number, because 864025 - 27 = 863897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (864029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8022 + ... + 8128.

It is an arithmetic number, because the mean of its divisors is an integer number (50220).

2864025 is an apocalyptic number.

864025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

864025 is a deficient number, since it is larger than the sum of its proper divisors (341255).

864025 is a wasteful number, since it uses less digits than its factorization.

864025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 864025 is about 929.5294508513. The cubic root of 864025 is about 95.2449817441.

It can be divided in two parts, 8640 and 25, that multiplied together give a cube (216000 = 603).

The spelling of 864025 in words is "eight hundred sixty-four thousand, twenty-five".

Divisors: 1 5 17 19 25 85 95 107 323 425 475 535 1615 1819 2033 2675 8075 9095 10165 34561 45475 50825 172805 864025