1198428 has 48 divisors (see below), whose sum is σ = 3489024. Its totient is φ = 311040.

The previous prime is 1198427. The next prime is 1198433. The reversal of 1198428 is 8248911.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198427) 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, 276 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (72688).

2^1198428 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 1198428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744512).

1198428 is an abundant number, since it is smaller than the sum of its proper divisors (2290596).

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

1198428 is a wasteful number, since it uses less digits than its factorization.

1198428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1320 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 1198428 is about 1094.7273633193. The cubic root of 1198428 is about 106.2194338834.

The spelling of 1198428 in words is "one million, one hundred ninety-eight thousand, four hundred twenty-eight".