Search a number
-
+
58639220 = 2252931961
BaseRepresentation
bin1101111110110…
…0001101110100
311002100011212222
43133230031310
5110002423340
65452501512
71311265553
oct337541564
9132304788
1058639220
1130111572
121777a898
13c1c1783
147b05d9a
1552348b5
hex37ec374

58639220 has 12 divisors (see below), whose sum is σ = 123142404. Its totient is φ = 23455680.

The previous prime is 58639219. The next prime is 58639241. The reversal of 58639220 is 2293685.

It can be written as a sum of positive squares in 2 ways, for example, as 36699364 + 21939856 = 6058^2 + 4684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465961 + ... + 1466000.

It is an arithmetic number, because the mean of its divisors is an integer number (10261867).

Almost surely, 258639220 is an apocalyptic number.

It is an amenable number.

58639220 is an abundant number, since it is smaller than the sum of its proper divisors (64503184).

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

58639220 is a wasteful number, since it uses less digits than its factorization.

58639220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931970 (or 2931968 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 58639220 is about 7657.6249581708. The cubic root of 58639220 is about 388.5045072128.

The spelling of 58639220 in words is "fifty-eight million, six hundred thirty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 2931961 5863922 11727844 14659805 29319610 58639220