12489500 has 24 divisors (see below), whose sum is σ = 27278160. Its totient is φ = 4995600.

The previous prime is 12489487. The next prime is 12489511. The reversal of 12489500 is 598421.

It is a super-2 number, since 2×12489500² = 311975220500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11990 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (1136590).

Almost surely, 2^12489500 is an apocalyptic number.

12489500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12489500 is an abundant number, since it is smaller than the sum of its proper divisors (14788660).

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

12489500 is a wasteful number, since it uses less digits than its factorization.

12489500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24998 (or 24986 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12489500 is about 3534.0486697271. The cubic root of 12489500 is about 232.0144412334.

The spelling of 12489500 in words is "twelve million, four hundred eighty-nine thousand, five hundred".