Search a number
-
+
258913420 = 22537439797
BaseRepresentation
bin11110110111010…
…11010010001100
3200001012011102221
433123223102030
51012240212140
641405225124
76262504423
oct1733532214
9601164387
10258913420
11123171537
12728621a4
134184380c
142655a2ba
1517ae514a
hexf6eb48c

258913420 has 48 divisors (see below), whose sum is σ = 560387520. Its totient is φ = 100410624.

The previous prime is 258913411. The next prime is 258913429. The reversal of 258913420 is 24319852.

It is an interprime number because it is at equal distance from previous prime (258913411) and next prime (258913429).

It is not an unprimeable number, because it can be changed into a prime (258913429) 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, 324462 + ... + 325258.

It is an arithmetic number, because the mean of its divisors is an integer number (11674740).

Almost surely, 2258913420 is an apocalyptic number.

258913420 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 258913420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280193760).

258913420 is an abundant number, since it is smaller than the sum of its proper divisors (301474100).

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

258913420 is a wasteful number, since it uses less digits than its factorization.

258913420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 258913420 is about 16090.7868048769. The cubic root of 258913420 is about 637.3600728390.

The spelling of 258913420 in words is "two hundred fifty-eight million, nine hundred thirteen thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 439 740 797 878 1594 1756 2195 3188 3985 4390 7970 8780 15940 16243 29489 32486 58978 64972 81215 117956 147445 162430 294890 324860 349883 589780 699766 1399532 1749415 3498830 6997660 12945671 25891342 51782684 64728355 129456710 258913420