Search a number
-
+
628115205 = 35192975997
BaseRepresentation
bin100101011100000…
…100011100000101
31121202220120002010
4211130010130011
52241244141310
6142154404433
721364614444
oct4534043405
91552816063
10628115205
112a2611283
12156430719
13a0190a03
145d5c4d5b
153a223320
hex25704705

628115205 has 32 divisors (see below), whose sum is σ = 1094371200. Its totient is φ = 306415872.

The previous prime is 628115197. The next prime is 628115209. The reversal of 628115205 is 502511826.

It is not a de Polignac number, because 628115205 - 23 = 628115197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628115209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29734 + ... + 46263.

It is an arithmetic number, because the mean of its divisors is an integer number (34199100).

Almost surely, 2628115205 is an apocalyptic number.

It is an amenable number.

628115205 is a deficient number, since it is larger than the sum of its proper divisors (466255995).

628115205 is a wasteful number, since it uses less digits than its factorization.

628115205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76053.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 628115205 is about 25062.2266568635. The cubic root of 628115205 is about 856.4061332487.

The spelling of 628115205 in words is "six hundred twenty-eight million, one hundred fifteen thousand, two hundred five".

Divisors: 1 3 5 15 19 29 57 87 95 145 285 435 551 1653 2755 8265 75997 227991 379985 1139955 1443943 2203913 4331829 6611739 7219715 11019565 21659145 33058695 41874347 125623041 209371735 628115205