1155388 has 24 divisors (see below), whose sum is σ = 2307312. Its totient is φ = 501504.

The previous prime is 1155379. The next prime is 1155403. The reversal of 1155388 is 8835511.

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, 231 + ... + 1537.

It is an arithmetic number, because the mean of its divisors is an integer number (96138).

2^1155388 is an apocalyptic number.

It is an amenable number.

1155388 is a deficient number, since it is larger than the sum of its proper divisors (1151924).

1155388 is a wasteful number, since it uses less digits than its factorization.

1155388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 1155388 is about 1074.8897617896. The cubic root of 1155388 is about 104.9323222229.

The spelling of 1155388 in words is "one million, one hundred fifty-five thousand, three hundred eighty-eight".