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12489874 = 2234753109
BaseRepresentation
bin101111101001…
…010010010010
3212111112212221
4233221102102
511144133444
61123411254
7211106425
oct57512222
925445787
1012489874
117060911
124223b2a
132783c77
1419319bc
15116aa84
hexbe9492

12489874 has 32 divisors (see below), whose sum is σ = 20528640. Its totient is φ = 5683392.

The previous prime is 12489863. The next prime is 12489877. The reversal of 12489874 is 47898421.

12489874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12489874.

It is not an unprimeable number, because it can be changed into a prime (12489877) 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, 114532 + ... + 114640.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

Almost surely, 212489874 is an apocalyptic number.

12489874 is a deficient number, since it is larger than the sum of its proper divisors (8038766).

12489874 is a wasteful number, since it uses less digits than its factorization.

12489874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 129024, while the sum is 43.

The square root of 12489874 is about 3534.1015831467. The cubic root of 12489874 is about 232.0167571130.

It can be divided in two parts, 124 and 89874, that added together give a palindrome (89998).

The spelling of 12489874 in words is "twelve million, four hundred eighty-nine thousand, eight hundred seventy-four".

Divisors: 1 2 23 46 47 53 94 106 109 218 1081 1219 2162 2438 2491 2507 4982 5014 5123 5777 10246 11554 57293 114586 117829 132871 235658 265742 271519 543038 6244937 12489874