1888428 has 24 divisors (see below), whose sum is σ = 4666032. Its totient is φ = 592384.

The previous prime is 1888421. The next prime is 1888441. The reversal of 1888428 is 8248881.

It is a super-2 number, since 2×1888428² = 7132320622368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1888421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4425 + ... + 4832.

It is an arithmetic number, because the mean of its divisors is an integer number (194418).

2^1888428 is an apocalyptic number.

It is an amenable number.

1888428 is an abundant number, since it is smaller than the sum of its proper divisors (2777604).

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

1888428 is a wasteful number, since it uses less digits than its factorization.

1888428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9279 counting only the distinct ones).

The product of its digits is 32768, while the sum is 39.

The square root of 1888428 is about 1374.2008586811. The cubic root of 1888428 is about 123.6042708592.

The spelling of 1888428 in words is "one million, eight hundred eighty-eight thousand, four hundred twenty-eight".