1230212988 has 48 divisors (see below), whose sum is σ = 3357312000. Its totient is φ = 388487664.

The previous prime is 1230212957. The next prime is 1230212999. The reversal of 1230212988 is 8892120321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297708 + ... + 301811.

It is an arithmetic number, because the mean of its divisors is an integer number (69944000).

Almost surely, 2^1230212988 is an apocalyptic number.

1230212988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1230212988 is an abundant number, since it is smaller than the sum of its proper divisors (2127099012).

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

1230212988 is a wasteful number, since it uses less digits than its factorization.

1230212988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599551 (or 599543 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1230212988 is about 35074.3921971572. The cubic root of 1230212988 is about 1071.5031100600.

The spelling of 1230212988 in words is "one billion, two hundred thirty million, two hundred twelve thousand, nine hundred eighty-eight".