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250065020 = 22579158269
BaseRepresentation
bin11101110011110…
…11000001111100
3122102112121201102
432321323001330
51003004040040
640451432232
76124342352
oct1671730174
9572477642
10250065020
11119178607
126b8b5678
133ca6618a
14252d57d2
1516e48515
hexee7b07c

250065020 has 24 divisors (see below), whose sum is σ = 531787200. Its totient is φ = 98759232.

The previous prime is 250065001. The next prime is 250065029. The reversal of 250065020 is 20560052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 250064983 and 250065001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250065029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77555 + ... + 80714.

It is an arithmetic number, because the mean of its divisors is an integer number (22157800).

Almost surely, 2250065020 is an apocalyptic number.

250065020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250065020 is an abundant number, since it is smaller than the sum of its proper divisors (281722180).

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

250065020 is a wasteful number, since it uses less digits than its factorization.

250065020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158357 (or 158355 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 250065020 is about 15813.4442801055. Note that the first 3 decimals coincide. The cubic root of 250065020 is about 630.0151335913.

The spelling of 250065020 in words is "two hundred fifty million, sixty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 79 158 316 395 790 1580 158269 316538 633076 791345 1582690 3165380 12503251 25006502 50013004 62516255 125032510 250065020