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12028980 = 2235200483
BaseRepresentation
bin101101111000…
…110000110100
3211122010122210
4231320300310
511034411410
61105453420
7204146625
oct55706064
924563583
1012028980
116876607
124041270
132652252
141851a4c
1510c9220
hexb78c34

12028980 has 24 divisors (see below), whose sum is σ = 33681312. Its totient is φ = 3207712.

The previous prime is 12028967. The next prime is 12028981. The reversal of 12028980 is 8982021.

12028980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100182 + ... + 100301.

It is an arithmetic number, because the mean of its divisors is an integer number (1403388).

Almost surely, 212028980 is an apocalyptic number.

12028980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12028980 is an abundant number, since it is smaller than the sum of its proper divisors (21652332).

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

12028980 is a wasteful number, since it uses less digits than its factorization.

12028980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200495 (or 200493 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 12028980 is about 3468.2819954554. The cubic root of 12028980 is about 229.1269993418.

The spelling of 12028980 in words is "twelve million, twenty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 200483 400966 601449 801932 1002415 1202898 2004830 2405796 3007245 4009660 6014490 12028980