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725228980 = 225734914843
BaseRepresentation
bin101011001110100…
…001110110110100
31212112122110010121
4223032201312310
52441124311410
6155544101324
723654226130
oct5316416664
91775573117
10725228980
113424112a3
12182a64844
13b7333898
146c4643c0
1543a079da
hex2b3a1db4

725228980 has 48 divisors (see below), whose sum is σ = 1745654400. Its totient is φ = 247920768.

The previous prime is 725228963. The next prime is 725228981. The reversal of 725228980 is 89822527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725228981) 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, 41439 + ... + 56281.

It is an arithmetic number, because the mean of its divisors is an integer number (36367800).

Almost surely, 2725228980 is an apocalyptic number.

725228980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

725228980 is an abundant number, since it is smaller than the sum of its proper divisors (1020425420).

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

725228980 is a wasteful number, since it uses less digits than its factorization.

725228980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15208 (or 15206 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 725228980 is about 26930.0757518430. The cubic root of 725228980 is about 898.4454563459.

The spelling of 725228980 in words is "seven hundred twenty-five million, two hundred twenty-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 349 698 1396 1745 2443 3490 4886 6980 9772 12215 14843 24430 29686 48860 59372 74215 103901 148430 207802 296860 415604 519505 1039010 2078020 5180207 10360414 20720828 25901035 36261449 51802070 72522898 103604140 145045796 181307245 362614490 725228980