12988998 has 80 divisors (see below), whose sum is σ = 32774544. Its totient is φ = 3810240.

The previous prime is 12988957. The next prime is 12989017. The reversal of 12988998 is 89988921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 65836 + ... + 66032.

Almost surely, 2^12988998 is an apocalyptic number.

12988998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12988998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16387272).

12988998 is an abundant number, since it is smaller than the sum of its proper divisors (19785546).

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

12988998 is a wasteful number, since it uses less digits than its factorization.

12988998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 250 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 12988998 is about 3604.0252496341. The cubic root of 12988998 is about 235.0671182965.

It can be divided in two parts, 1298 and 8998, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 12988998 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred ninety-eight".