1179820 has 12 divisors (see below), whose sum is σ = 2477664. Its totient is φ = 471920.

The previous prime is 1179797. The next prime is 1179839. The reversal of 1179820 is 289711.

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, 29476 + ... + 29515.

It is an arithmetic number, because the mean of its divisors is an integer number (206472).

2^1179820 is an apocalyptic number.

1179820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1179820 is an abundant number, since it is smaller than the sum of its proper divisors (1297844).

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

1179820 is a wasteful number, since it uses less digits than its factorization.

1179820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59000 (or 58998 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1179820 is about 1086.1951942446. The cubic root of 1179820 is about 105.6668070909. Note that the first 3 decimals are identical.

The spelling of 1179820 in words is "one million, one hundred seventy-nine thousand, eight hundred twenty".