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13879932 = 22311711481
BaseRepresentation
bin110100111100…
…101001111100
3222010011200120
4310330221330
512023124212
61213254540
7225656163
oct64745174
928104616
1013879932
117920220
124794450
132b4c8a1
141bb43da
15134288c
hexd3ca7c

13879932 has 48 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 4144000.

The previous prime is 13879907. The next prime is 13879967. The reversal of 13879932 is 23997831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632 + ... + 10112.

It is an arithmetic number, because the mean of its divisors is an integer number (746928).

Almost surely, 213879932 is an apocalyptic number.

13879932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13879932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17926272).

13879932 is an abundant number, since it is smaller than the sum of its proper divisors (21972612).

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

13879932 is a wasteful number, since it uses less digits than its factorization.

13879932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1568 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 13879932 is about 3725.5780759501. The cubic root of 13879932 is about 240.3232449962.

It can be divided in two parts, 138799 and 32, that added together give a palindrome (138831).

The spelling of 13879932 in words is "thirteen million, eight hundred seventy-nine thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 71 132 142 213 284 426 781 852 1481 1562 2343 2962 3124 4443 4686 5924 8886 9372 16291 17772 32582 48873 65164 97746 105151 195492 210302 315453 420604 630906 1156661 1261812 2313322 3469983 4626644 6939966 13879932