1988128 has 12 divisors (see below), whose sum is σ = 3914190. Its totient is φ = 994048.

The previous prime is 1988113. The next prime is 1988137. The reversal of 1988128 is 8218891.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 795664 = 1092^2 + 892^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31033 + ... + 31096.

2^1988128 is an apocalyptic number.

It is an amenable number.

1988128 is a deficient number, since it is larger than the sum of its proper divisors (1926062).

1988128 is an equidigital number, since it uses as much as digits as its factorization.

1988128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62139 (or 62131 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 1988128 is about 1410.0099290431. The cubic root of 1988128 is about 125.7423137035.

It can be divided in two parts, 1988 and 128, that added together give a square (2116 = 46²).

The spelling of 1988128 in words is "one million, nine hundred eighty-eight thousand, one hundred twenty-eight".