1988412 has 12 divisors (see below), whose sum is σ = 4639656. Its totient is φ = 662800.

The previous prime is 1988411. The next prime is 1988423. The reversal of 1988412 is 2148891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 82839 + ... + 82862.

It is an arithmetic number, because the mean of its divisors is an integer number (386638).

2^1988412 is an apocalyptic number.

1988412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1988412 is an abundant number, since it is smaller than the sum of its proper divisors (2651244).

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

1988412 is a wasteful number, since it uses less digits than its factorization.

1988412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165708 (or 165706 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 1988412 is about 1410.1106339575. The cubic root of 1988412 is about 125.7483007621.

The spelling of 1988412 in words is "one million, nine hundred eighty-eight thousand, four hundred twelve".