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258353380 = 22531715869
BaseRepresentation
bin11110110011000…
…10100011100100
3200000010201012201
433121202203210
51012114302010
641345224244
76254652565
oct1731424344
9600121181
10258353380
1112291979a
1272632084
13416a892c
142645216c
1517a3423a
hexf6628e4

258353380 has 48 divisors (see below), whose sum is σ = 568028160. Its totient is φ = 98582400.

The previous prime is 258353339. The next prime is 258353387. The reversal of 258353380 is 83353852.

258353380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (258353387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41086 + ... + 46954.

It is an arithmetic number, because the mean of its divisors is an integer number (11833920).

Almost surely, 2258353380 is an apocalyptic number.

258353380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258353380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284014080).

258353380 is an abundant number, since it is smaller than the sum of its proper divisors (309674780).

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

258353380 is a wasteful number, since it uses less digits than its factorization.

258353380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980 (or 5978 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 258353380 is about 16073.3748789730. The cubic root of 258353380 is about 636.9001960605.

The spelling of 258353380 in words is "two hundred fifty-eight million, three hundred fifty-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 71 124 142 155 284 310 355 620 710 1420 2201 4402 5869 8804 11005 11738 22010 23476 29345 44020 58690 117380 181939 363878 416699 727756 833398 909695 1666796 1819390 2083495 3638780 4166990 8333980 12917669 25835338 51670676 64588345 129176690 258353380