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13387398 = 2317131249
BaseRepresentation
bin110011000100…
…011010000110
3221012011001120
4303010122012
511411344043
61154534410
7221535213
oct63043206
927164046
1013387398
117614172
124597406
132a0964b
141ac6b0a
151296983
hexcc4686

13387398 has 16 divisors (see below), whose sum is σ = 28350000. Its totient is φ = 4199936.

The previous prime is 13387393. The next prime is 13387399. The reversal of 13387398 is 89378331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13387391) 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, 65523 + ... + 65726.

It is an arithmetic number, because the mean of its divisors is an integer number (1771875).

Almost surely, 213387398 is an apocalyptic number.

13387398 is an abundant number, since it is smaller than the sum of its proper divisors (14962602).

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

13387398 is a wasteful number, since it uses less digits than its factorization.

13387398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131271.

The product of its digits is 108864, while the sum is 42.

The square root of 13387398 is about 3658.8793366275. The cubic root of 13387398 is about 237.4462918258.

The spelling of 13387398 in words is "thirteen million, three hundred eighty-seven thousand, three hundred ninety-eight".

Divisors: 1 2 3 6 17 34 51 102 131249 262498 393747 787494 2231233 4462466 6693699 13387398