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12976290 = 2325314651
BaseRepresentation
bin110001100000…
…000010100010
3220102021010100
4301200002202
511310220130
61142043230
7215203515
oct61400242
926367110
1012976290
117363308
124419516
1328c44a2
141a1ad7c
151214c60
hexc600a2

12976290 has 48 divisors (see below), whose sum is σ = 34834176. Its totient is φ = 3348000.

The previous prime is 12976273. The next prime is 12976309. The reversal of 12976290 is 9267921.

12976290 is a `hidden beast` number, since 1 + 29 + 7 + 629 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (725712).

Almost surely, 212976290 is an apocalyptic number.

12976290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12976290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17417088).

12976290 is an abundant number, since it is smaller than the sum of its proper divisors (21857886).

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

12976290 is a wasteful number, since it uses less digits than its factorization.

12976290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695 (or 4692 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 12976290 is about 3602.2617894873. The cubic root of 12976290 is about 234.9904326873.

The spelling of 12976290 in words is "twelve million, nine hundred seventy-six thousand, two hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 31 45 62 90 93 155 186 279 310 465 558 930 1395 2790 4651 9302 13953 23255 27906 41859 46510 69765 83718 139530 144181 209295 288362 418590 432543 720905 865086 1297629 1441810 2162715 2595258 4325430 6488145 12976290