1155204 has 18 divisors (see below), whose sum is σ = 2920190. Its totient is φ = 385056.

The previous prime is 1155179. The next prime is 1155211. The reversal of 1155204 is 4025511.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 518400 = 798^2 + 720^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16009 + ... + 16080.

2^1155204 is an apocalyptic number.

It is an amenable number.

1155204 is an abundant number, since it is smaller than the sum of its proper divisors (1764986).

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

1155204 is a wasteful number, since it uses less digits than its factorization.

1155204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32099 (or 32094 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1155204 is about 1074.8041682093. The cubic root of 1155204 is about 104.9267516347.

The spelling of 1155204 in words is "one million, one hundred fifty-five thousand, two hundred four".