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2258381 = 31263277
BaseRepresentation
bin1000100111010111001101
311020201220202
420213113031
51034232011
6120223245
725124126
oct10472715
94221822
102258381
111302834
1290ab25
13610c28
1442b04d
152e923b
hex2275cd

2258381 has 8 divisors (see below), whose sum is σ = 2348544. Its totient is φ = 2169360.

The previous prime is 2258363. The next prime is 2258387. The reversal of 2258381 is 1838522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2258381 - 218 = 1996237 is a prime.

It is a super-2 number, since 2×22583812 = 10200569482322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2258387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8015 + ... + 8291.

It is an arithmetic number, because the mean of its divisors is an integer number (293568).

22258381 is an apocalyptic number.

It is an amenable number.

2258381 is a deficient number, since it is larger than the sum of its proper divisors (90163).

2258381 is a wasteful number, since it uses less digits than its factorization.

2258381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its digits is 3840, while the sum is 29.

The square root of 2258381 is about 1502.7910699761. The cubic root of 2258381 is about 131.1995676233.

The spelling of 2258381 in words is "two million, two hundred fifty-eight thousand, three hundred eighty-one".

Divisors: 1 31 263 277 8153 8587 72851 2258381