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12397072 = 243743487
BaseRepresentation
bin101111010010…
…101000010000
3212022211120211
4233102220100
511133201242
61121413504
7210242032
oct57225020
925284524
1012397072
116aa8116
12419a294
13275095c
141909c52
15114d317
hexbd2a10

12397072 has 40 divisors (see below), whose sum is σ = 25294016. Its totient is φ = 5878656.

The previous prime is 12397067. The next prime is 12397081. The reversal of 12397072 is 27079321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25213 + ... + 25699.

Almost surely, 212397072 is an apocalyptic number.

It is an amenable number.

12397072 is an abundant number, since it is smaller than the sum of its proper divisors (12896944).

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

12397072 is a wasteful number, since it uses less digits than its factorization.

12397072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 12397072 is about 3520.9475997237. The cubic root of 12397072 is about 231.4406859627.

The spelling of 12397072 in words is "twelve million, three hundred ninety-seven thousand, seventy-two".

Divisors: 1 2 4 8 16 37 43 74 86 148 172 296 344 487 592 688 974 1591 1948 3182 3896 6364 7792 12728 18019 20941 25456 36038 41882 72076 83764 144152 167528 288304 335056 774817 1549634 3099268 6198536 12397072