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12590020 = 225691911
BaseRepresentation
bin110000000001…
…101111000100
3212200122021001
4300001233010
511210340040
61125503044
7212004412
oct60015704
925618231
1012590020
11711a083
124271a84
1327ba721
14195a2b2
15118a59a
hexc01bc4

12590020 has 24 divisors (see below), whose sum is σ = 26506368. Its totient is φ = 5023200.

The previous prime is 12590009. The next prime is 12590033. The reversal of 12590020 is 2009521.

It is a self number, because there is not a number n which added to its sum of digits gives 12590020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13365 + ... + 14275.

It is an arithmetic number, because the mean of its divisors is an integer number (1104432).

Almost surely, 212590020 is an apocalyptic number.

12590020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12590020 is an abundant number, since it is smaller than the sum of its proper divisors (13916348).

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

12590020 is a wasteful number, since it uses less digits than its factorization.

12590020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12590020 is about 3548.2418181404. The cubic root of 12590020 is about 232.6352240697.

Adding to 12590020 its reverse (2009521), we get a palindrome (14599541).

The spelling of 12590020 in words is "twelve million, five hundred ninety thousand, twenty".

Divisors: 1 2 4 5 10 20 691 911 1382 1822 2764 3455 3644 4555 6910 9110 13820 18220 629501 1259002 2518004 3147505 6295010 12590020