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9998725 = 5211103353
BaseRepresentation
bin100110001001…
…000110000101
3200210222200011
4212021012011
510024424400
6554150221
7150662542
oct46110605
920728604
109998725
11570a210
123422371
1320c1109
141483bc9
15d278ba
hex989185

9998725 has 24 divisors (see below), whose sum is σ = 13695552. Its totient is φ = 7180800.

The previous prime is 9998719. The next prime is 9998741. The reversal of 9998725 is 5278999.

It is not a de Polignac number, because 9998725 - 215 = 9965957 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 28149 + ... + 28501.

It is an arithmetic number, because the mean of its divisors is an integer number (570648).

Almost surely, 29998725 is an apocalyptic number.

It is an amenable number.

9998725 is a deficient number, since it is larger than the sum of its proper divisors (3696827).

9998725 is a wasteful number, since it uses less digits than its factorization.

9998725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 472 counting only the distinct ones).

The product of its digits is 408240, while the sum is 49.

The square root of 9998725 is about 3162.0760585413. The cubic root of 9998725 is about 215.4343122666.

The spelling of 9998725 in words is "nine million, nine hundred ninety-eight thousand, seven hundred twenty-five".

Divisors: 1 5 11 25 55 103 275 353 515 1133 1765 2575 3883 5665 8825 19415 28325 36359 97075 181795 399949 908975 1999745 9998725