1898256 has 40 divisors (see below), whose sum is σ = 4981824. Its totient is φ = 622720.

The previous prime is 1898249. The next prime is 1898257. The reversal of 1898256 is 6528981.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3130 + ... + 3686.

2^1898256 is an apocalyptic number.

1898256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490912).

1898256 is an abundant number, since it is smaller than the sum of its proper divisors (3083568).

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

1898256 is a wasteful number, since it uses less digits than its factorization.

1898256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 633 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 1898256 is about 1377.7721146837. The cubic root of 1898256 is about 123.8183257009.

The spelling of 1898256 in words is "one million, eight hundred ninety-eight thousand, two hundred fifty-six".