Search a number
-
+
725780230 = 257431032341
BaseRepresentation
bin101011010000101…
…000011100000110
31212120200110022021
4223100220130012
52441244431410
6200003553354
723662013230
oct5320503406
91776613267
10725780230
1134275847a
1218308b85a
13b7497776
146c569250
1543ab5eda
hex2b428706

725780230 has 64 divisors (see below), whose sum is σ = 1543246848. Its totient is φ = 240589440.

The previous prime is 725780227. The next prime is 725780261. The reversal of 725780230 is 32087527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308860 + ... + 311200.

It is an arithmetic number, because the mean of its divisors is an integer number (24113232).

Almost surely, 2725780230 is an apocalyptic number.

725780230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

725780230 is an abundant number, since it is smaller than the sum of its proper divisors (817466618).

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

725780230 is a wasteful number, since it uses less digits than its factorization.

725780230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 725780230 is about 26940.3086470812. The cubic root of 725780230 is about 898.6730362502.

The spelling of 725780230 in words is "seven hundred twenty-five million, seven hundred eighty thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 43 70 86 103 206 215 301 430 515 602 721 1030 1442 1505 2341 3010 3605 4429 4682 7210 8858 11705 16387 22145 23410 31003 32774 44290 62006 81935 100663 155015 163870 201326 241123 310030 482246 503315 704641 1006630 1205615 1409282 1687861 2411230 3375722 3523205 7046410 8439305 10368289 16878610 20736578 51841445 72578023 103682890 145156046 362890115 725780230