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12950840 = 2357232011
BaseRepresentation
bin110001011001…
…110100111000
3220100222012202
4301121310320
511303411330
61141325332
7215036360
oct61316470
926328182
1012950840
117346181
124406848
1328b5a26
141a119a0
15120c445
hexc59d38

12950840 has 64 divisors (see below), whose sum is σ = 34767360. Its totient is φ = 4245120.

The previous prime is 12950831. The next prime is 12950843. The reversal of 12950840 is 4805921.

12950840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12950843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5435 + ... + 7445.

It is an arithmetic number, because the mean of its divisors is an integer number (543240).

Almost surely, 212950840 is an apocalyptic number.

12950840 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 12950840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17383680).

12950840 is an abundant number, since it is smaller than the sum of its proper divisors (21816520).

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

12950840 is a wasteful number, since it uses less digits than its factorization.

12950840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12950840 is about 3598.7275528998. The cubic root of 12950840 is about 234.8367056315.

The spelling of 12950840 in words is "twelve million, nine hundred fifty thousand, eight hundred forty".

Divisors: 1 2 4 5 7 8 10 14 20 23 28 35 40 46 56 70 92 115 140 161 184 230 280 322 460 644 805 920 1288 1610 2011 3220 4022 6440 8044 10055 14077 16088 20110 28154 40220 46253 56308 70385 80440 92506 112616 140770 185012 231265 281540 323771 370024 462530 563080 647542 925060 1295084 1618855 1850120 2590168 3237710 6475420 12950840