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12012040 = 235300301
BaseRepresentation
bin101101110100…
…101000001000
3211121021102101
4231310220020
511033341130
61105243144
7204046345
oct55645010
924537371
1012012040
116864907
1240334b4
132647621
1418497cc
1510c41ca
hexb74a08

12012040 has 16 divisors (see below), whose sum is σ = 27027180. Its totient is φ = 4804800.

The previous prime is 12012037. The next prime is 12012053. The reversal of 12012040 is 4021021.

It can be written as a sum of positive squares in 2 ways, for example, as 11519236 + 492804 = 3394^2 + 702^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150111 + ... + 150190.

Almost surely, 212012040 is an apocalyptic number.

12012040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012040 is an abundant number, since it is smaller than the sum of its proper divisors (15015140).

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

12012040 is a wasteful number, since it uses less digits than its factorization.

12012040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300312 (or 300308 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12012040 is about 3465.8390037623. The cubic root of 12012040 is about 229.0193915807.

Adding to 12012040 its reverse (4021021), we get a palindrome (16033061).

The spelling of 12012040 in words is "twelve million, twelve thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 300301 600602 1201204 1501505 2402408 3003010 6006020 12012040