1155630 has 32 divisors (see below), whose sum is σ = 3170304. Its totient is φ = 264096.

The previous prime is 1155629. The next prime is 1155631. The reversal of 1155630 is 365511.

1155630 = 536² + 537² + ... + 539².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1155629) and next prime (1155631).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1155597 and 1155606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (99072).

2^1155630 is an apocalyptic number.

1155630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155630 is an abundant number, since it is smaller than the sum of its proper divisors (2014674).

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

1155630 is a wasteful number, since it uses less digits than its factorization.

1155630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1155630 is about 1075.0023255789. The cubic root of 1155630 is about 104.9396478570.

The spelling of 1155630 in words is "one million, one hundred fifty-five thousand, six hundred thirty".