1975128 has 64 divisors (see below), whose sum is σ = 5391360. Its totient is φ = 600576.

The previous prime is 1975123. The next prime is 1975133. The reversal of 1975128 is 8215791.

It is an interprime number because it is at equal distance from previous prime (1975123) and next prime (1975133).

It is a super-2 number, since 2×1975128² = 7802261232768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19125 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1975128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2695680).

1975128 is an abundant number, since it is smaller than the sum of its proper divisors (3416232).

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

1975128 is a wasteful number, since it uses less digits than its factorization.

1975128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 172 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 1975128 is about 1405.3924718740. The cubic root of 1975128 is about 125.4676456122.

The spelling of 1975128 in words is "one million, nine hundred seventy-five thousand, one hundred twenty-eight".