Search a number
-
+
3012990 = 235671499
BaseRepresentation
bin1011011111100101111110
312200002001020
423133211332
51232403430
6144325010
734416141
oct13374576
95602036
103012990
111778782
121013766
13816546
14586058
153e7b10
hex2df97e

3012990 has 32 divisors (see below), whose sum is σ = 7344000. Its totient is φ = 790944.

The previous prime is 3012979. The next prime is 3012991. The reversal of 3012990 is 992103.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3012990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012991) 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, 1261 + ... + 2759.

It is an arithmetic number, because the mean of its divisors is an integer number (229500).

Almost surely, 23012990 is an apocalyptic number.

3012990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3012990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3672000).

3012990 is an abundant number, since it is smaller than the sum of its proper divisors (4331010).

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

3012990 is a wasteful number, since it uses less digits than its factorization.

3012990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 3012990 is about 1735.7966470759. The cubic root of 3012990 is about 144.4328219884.

The spelling of 3012990 in words is "three million, twelve thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 67 134 201 335 402 670 1005 1499 2010 2998 4497 7495 8994 14990 22485 44970 100433 200866 301299 502165 602598 1004330 1506495 3012990