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138892 = 22132671
BaseRepresentation
bin100001111010001100
321001112011
4201322030
513421032
62551004
71115635
oct417214
9231464
10138892
1195396
1268464
134b2b0
143888c
152b247
hex21e8c

138892 has 12 divisors (see below), whose sum is σ = 261856. Its totient is φ = 64080.

The previous prime is 138889. The next prime is 138893. The reversal of 138892 is 298831.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (138893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284 + ... + 1387.

2138892 is an apocalyptic number.

It is an amenable number.

138892 is a deficient number, since it is larger than the sum of its proper divisors (122964).

138892 is a wasteful number, since it uses less digits than its factorization.

138892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688 (or 2686 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 138892 is about 372.6821702201. The cubic root of 138892 is about 51.7875951075.

The spelling of 138892 in words is "one hundred thirty-eight thousand, eight hundred ninety-two".

Divisors: 1 2 4 13 26 52 2671 5342 10684 34723 69446 138892