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12069940 = 22519231381
BaseRepresentation
bin101110000010…
…110000110100
3211201012211211
4232002300310
511042214230
61110411204
7204410221
oct56026064
924635754
1012069940
1168a4363
124060b04
132667a9c
141862948
1510d642a
hexb82c34

12069940 has 48 divisors (see below), whose sum is σ = 27861120. Its totient is φ = 4371840.

The previous prime is 12069931. The next prime is 12069961. The reversal of 12069940 is 4996021.

It is a happy number.

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, 8050 + ... + 9430.

It is an arithmetic number, because the mean of its divisors is an integer number (580440).

Almost surely, 212069940 is an apocalyptic number.

12069940 is a gapful number since it is divisible by the number (10) 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 12069940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13930560).

12069940 is an abundant number, since it is smaller than the sum of its proper divisors (15791180).

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

12069940 is a wasteful number, since it uses less digits than its factorization.

12069940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 12069940 is about 3474.1819180924. The cubic root of 12069940 is about 229.3867722577.

The spelling of 12069940 in words is "twelve million, sixty-nine thousand, nine hundred forty".

Divisors: 1 2 4 5 10 19 20 23 38 46 76 92 95 115 190 230 380 437 460 874 1381 1748 2185 2762 4370 5524 6905 8740 13810 26239 27620 31763 52478 63526 104956 127052 131195 158815 262390 317630 524780 603497 635260 1206994 2413988 3017485 6034970 12069940