1186420 has 24 divisors (see below), whose sum is σ = 2515464. Its totient is φ = 470016.

The previous prime is 1186411. The next prime is 1186439. The reversal of 1186420 is 246811.

It can be written as a sum of positive squares in 4 ways, for example, as 24336 + 1162084 = 156^2 + 1078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1186391 and 1186400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (104811).

2^1186420 is an apocalyptic number.

1186420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1186420 is an abundant number, since it is smaller than the sum of its proper divisors (1329044).

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

1186420 is a wasteful number, since it uses less digits than its factorization.

1186420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1186420 is about 1089.2290851791. The cubic root of 1186420 is about 105.8634767851.

The spelling of 1186420 in words is "one million, one hundred eighty-six thousand, four hundred twenty".