12987450 has 216 divisors, whose sum is σ = 44104320. Its totient is φ = 2721600.

The previous prime is 12987437. The next prime is 12987461. The reversal of 12987450 is 5478921.

12987450 is a `hidden beast` number, since 129 + 87 + 450 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 418935 + ... + 418965.

Almost surely, 2^12987450 is an apocalyptic number.

12987450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12987450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22052160).

12987450 is an abundant number, since it is smaller than the sum of its proper divisors (31116870).

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

12987450 is a wasteful number, since it uses less digits than its factorization.

12987450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12987450 is about 3603.8104833634. The cubic root of 12987450 is about 235.0577796660.

The spelling of 12987450 in words is "twelve million, nine hundred eighty-seven thousand, four hundred fifty".