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725153984 = 26313171153
BaseRepresentation
bin101011001110001…
…111100011000000
31212112111122020222
4223032033203000
52441114411414
6155542322212
723653464362
oct5316174300
91775448228
10725153984
1134236aa15
12182a29368
13b73086c9
146c444d32
15439e068e
hex2b38f8c0

725153984 has 56 divisors (see below), whose sum is σ = 1491374208. Its totient is φ = 349470720.

The previous prime is 725153983. The next prime is 725153993. The reversal of 725153984 is 489351527.

It is a super-2 number, since 2×7251539842 = 1051696601022144512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725153983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628352 + ... + 629504.

Almost surely, 2725153984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725153984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745687104).

725153984 is an abundant number, since it is smaller than the sum of its proper divisors (766220224).

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

725153984 is a wasteful number, since it uses less digits than its factorization.

725153984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1503 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 725153984 is about 26928.6832949552. The cubic root of 725153984 is about 898.4144858341.

The spelling of 725153984 in words is "seven hundred twenty-five million, one hundred fifty-three thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 16 31 32 62 64 124 248 317 496 634 992 1153 1268 1984 2306 2536 4612 5072 9224 9827 10144 18448 19654 20288 35743 36896 39308 71486 73792 78616 142972 157232 285944 314464 365501 571888 628928 731002 1143776 1462004 2287552 2924008 5848016 11330531 11696032 22661062 23392064 45322124 90644248 181288496 362576992 725153984