1186428 has 12 divisors (see below), whose sum is σ = 2768360. Its totient is φ = 395472.

The previous prime is 1186411. The next prime is 1186439. The reversal of 1186428 is 8246811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1186428³ = 5010088731333224256, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1186395 and 1186404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49423 + ... + 49446.

2^1186428 is an apocalyptic number.

It is an amenable number.

1186428 is an abundant number, since it is smaller than the sum of its proper divisors (1581932).

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

1186428 is a wasteful number, since it uses less digits than its factorization.

1186428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98876 (or 98874 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1186428 is about 1089.2327574949. The cubic root of 1186428 is about 105.8637147295.

The spelling of 1186428 in words is "one million, one hundred eighty-six thousand, four hundred twenty-eight".