1188870 has 32 divisors (see below), whose sum is σ = 2979072. Its totient is φ = 303072.

The previous prime is 1188857. The next prime is 1188899. The reversal of 1188870 is 788811.

1188870 = T₂₀₇ + T₂₀₈ + ... + T₂₅₁.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (93096).

2^1188870 is an apocalyptic number.

1188870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1188870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489536).

1188870 is an abundant number, since it is smaller than the sum of its proper divisors (1790202).

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

1188870 is a wasteful number, since it uses less digits than its factorization.

1188870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 1188870 is about 1090.3531537993. The cubic root of 1188870 is about 105.9362973123.

The spelling of 1188870 in words is "one million, one hundred eighty-eight thousand, eight hundred seventy".