1898688 has 112 divisors (see below), whose sum is σ = 5852160. Its totient is φ = 537600.

The previous prime is 1898681. The next prime is 1898693. The reversal of 1898688 is 8868981.

It is a super-2 number, since 2×1898688² = 7210032242688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1898681) 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, 61233 + ... + 61263.

2^1898688 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 1898688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2926080).

1898688 is an abundant number, since it is smaller than the sum of its proper divisors (3953472).

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

1898688 is a wasteful number, since it uses less digits than its factorization.

1898688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 76 counting only the distinct ones).

The product of its digits is 221184, while the sum is 48.

The square root of 1898688 is about 1377.9288806031. The cubic root of 1898688 is about 123.8277177358.

The spelling of 1898688 in words is "one million, eight hundred ninety-eight thousand, six hundred eighty-eight".