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12397552 = 242359571
BaseRepresentation
bin101111010010…
…101111110000
3212022212020121
4233102233300
511133210202
61121420024
7210243316
oct57225760
925285217
1012397552
116aa8512
12419a614
132750c3b
14190a0b6
15114d537
hexbd2bf0

12397552 has 40 divisors (see below), whose sum is σ = 25534080. Its totient is φ = 5818560.

The previous prime is 12397547. The next prime is 12397571. The reversal of 12397552 is 25579321.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

Together with 13136528 it forms an amicable pair .

It is a congruent number.

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, 21427 + ... + 21997.

It is an arithmetic number, because the mean of its divisors is an integer number (638352).

Almost surely, 212397552 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 12397552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12767040).

12397552 is an abundant number, since it is smaller than the sum of its proper divisors (13136528).

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

12397552 is a wasteful number, since it uses less digits than its factorization.

12397552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 655 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 12397552 is about 3521.0157625322. The cubic root of 12397552 is about 231.4436729609.

The spelling of 12397552 in words is "twelve million, three hundred ninety-seven thousand, five hundred fifty-two".

Divisors: 1 2 4 8 16 23 46 59 92 118 184 236 368 472 571 944 1142 1357 2284 2714 4568 5428 9136 10856 13133 21712 26266 33689 52532 67378 105064 134756 210128 269512 539024 774847 1549694 3099388 6198776 12397552