1260630 has 128 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 266112.

The previous prime is 1260629. The next prime is 1260641. The reversal of 1260630 is 360621.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43456 + ... + 43484.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2^1260630 is an apocalyptic number.

1260630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073600).

1260630 is an abundant number, since it is smaller than the sum of its proper divisors (2886570).

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

1260630 is a wasteful number, since it uses less digits than its factorization.

1260630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1260630 is about 1122.7778052669. Note that the first 3 decimals coincide. The cubic root of 1260630 is about 108.0262281978.

Subtracting from 1260630 its reverse (360621), we obtain a palindrome (900009).

The spelling of 1260630 in words is "one million, two hundred sixty thousand, six hundred thirty".