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725808474 = 232194994253
BaseRepresentation
bin101011010000101…
…111010101011010
31212120201220001100
4223100233111122
52441301332344
6200004332230
723662161456
oct5320572532
91776656040
10725808474
11342777716
121830a4076
13b74a7591
146c575666
1543abe569
hex2b42f55a

725808474 has 48 divisors (see below), whose sum is σ = 1659060000. Its totient is φ = 228689568.

The previous prime is 725808469. The next prime is 725808509. The reversal of 725808474 is 474808527.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168532 + ... + 172784.

It is an arithmetic number, because the mean of its divisors is an integer number (34563750).

Almost surely, 2725808474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725808474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829530000).

725808474 is an abundant number, since it is smaller than the sum of its proper divisors (933251526).

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

725808474 is a wasteful number, since it uses less digits than its factorization.

725808474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779 (or 4776 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 725808474 is about 26940.8328379061. The cubic root of 725808474 is about 898.6846934944.

The spelling of 725808474 in words is "seven hundred twenty-five million, eight hundred eight thousand, four hundred seventy-four".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 499 998 1497 2994 4253 4491 8506 8982 9481 12759 18962 25518 28443 38277 56886 76554 80807 85329 161614 170658 242421 484842 727263 1454526 2122247 4244494 6366741 12733482 19100223 38200446 40322693 80645386 120968079 241936158 362904237 725808474