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381269 = 7231251
BaseRepresentation
bin1011101000101010101
3201101000002
41131011111
544200034
612101045
73145400
oct1350525
9641002
10381269
112404a9
12164785
13104705
149cd37
1577e7e
hex5d155

381269 has 12 divisors (see below), whose sum is σ = 459648. Its totient is φ = 315000.

The previous prime is 381253. The next prime is 381287. The reversal of 381269 is 962183.

It is not a de Polignac number, because 381269 - 24 = 381253 is a prime.

It is a super-2 number, since 2×3812692 = 290732100722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381209) 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, 1394 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2381269 is an apocalyptic number.

It is an amenable number.

381269 is a deficient number, since it is larger than the sum of its proper divisors (78379).

381269 is a wasteful number, since it uses less digits than its factorization.

381269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 289 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 381269 is about 617.4698373200. The cubic root of 381269 is about 72.5121026169.

The spelling of 381269 in words is "three hundred eighty-one thousand, two hundred sixty-nine".

Divisors: 1 7 31 49 217 251 1519 1757 7781 12299 54467 381269