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250830381 = 3192231607
BaseRepresentation
bin11101111001101…
…01111000101101
3122110222111121010
432330311320231
51003203033011
640520055433
76134010624
oct1674657055
9573874533
10250830381
1111965063a
1270004579
133cc73659
14254546bb
151704a1a6
hexef35e2d

250830381 has 12 divisors (see below), whose sum is σ = 352970592. Its totient is φ = 158418504.

The previous prime is 250830361. The next prime is 250830389. The reversal of 250830381 is 183038052.

It is a happy number.

It is not a de Polignac number, because 250830381 - 26 = 250830317 is a prime.

It is a super-2 number, since 2×2508303812 = 125831760065210322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250830389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114721 + ... + 116886.

It is an arithmetic number, because the mean of its divisors is an integer number (29414216).

Almost surely, 2250830381 is an apocalyptic number.

It is an amenable number.

250830381 is a deficient number, since it is larger than the sum of its proper divisors (102140211).

250830381 is a wasteful number, since it uses less digits than its factorization.

250830381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231648 (or 231629 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 250830381 is about 15837.6254849015. The cubic root of 250830381 is about 630.6572304754.

The spelling of 250830381 in words is "two hundred fifty million, eight hundred thirty thousand, three hundred eighty-one".

Divisors: 1 3 19 57 361 1083 231607 694821 4400533 13201599 83610127 250830381