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258412 = 22711839
BaseRepresentation
bin111111000101101100
3111010110211
4333011230
531232122
65312204
72124250
oct770554
9433424
10258412
11167170
12105664
139080b
146a260
1551877
hex3f16c

258412 has 24 divisors (see below), whose sum is σ = 564480. Its totient is φ = 100560.

The previous prime is 258407. The next prime is 258413. The reversal of 258412 is 214852.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (258413) 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 7 ways as a sum of consecutive naturals, for example, 112 + ... + 727.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2258412 is an apocalyptic number.

258412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

258412 is an abundant number, since it is smaller than the sum of its proper divisors (306068).

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

258412 is a wasteful number, since it uses less digits than its factorization.

258412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 859 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 258412 is about 508.3424042907. The cubic root of 258412 is about 63.6948362989.

The spelling of 258412 in words is "two hundred fifty-eight thousand, four hundred twelve".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 839 1678 3356 5873 9229 11746 18458 23492 36916 64603 129206 258412