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725650960 = 2459070637
BaseRepresentation
bin101011010000001…
…000111000010000
31212120102212222111
4223100020320100
52441231312320
6200001115104
723660634316
oct5320107020
91776385874
10725650960
1134267a341
12183028a94
13b7450988
146c5340b6
1543a8ca5a
hex2b408e10

725650960 has 20 divisors (see below), whose sum is σ = 1687138668. Its totient is φ = 290260352.

The previous prime is 725650873. The next prime is 725650987. The reversal of 725650960 is 69056527.

It can be written as a sum of positive squares in 2 ways, for example, as 179774464 + 545876496 = 13408^2 + 23364^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 4535239 + ... + 4535398.

Almost surely, 2725650960 is an apocalyptic number.

It is an amenable number.

725650960 is an abundant number, since it is smaller than the sum of its proper divisors (961487708).

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

725650960 is a wasteful number, since it uses less digits than its factorization.

725650960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070650 (or 9070644 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 725650960 is about 26937.9093472378. The cubic root of 725650960 is about 898.6196783344.

The spelling of 725650960 in words is "seven hundred twenty-five million, six hundred fifty thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 9070637 18141274 36282548 45353185 72565096 90706370 145130192 181412740 362825480 725650960