1255730 has 16 divisors (see below), whose sum is σ = 2583360. Its totient is φ = 430512.

The previous prime is 1255721. The next prime is 1255747. The reversal of 1255730 is 375521.

It is a junction number, because it is equal to n+sod(n) for n = 1255696 and 1255705.

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, 8900 + ... + 9039.

It is an arithmetic number, because the mean of its divisors is an integer number (161460).

2^1255730 is an apocalyptic number.

1255730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255730 is an abundant number, since it is smaller than the sum of its proper divisors (1327630).

1255730 is a wasteful number, since it uses less digits than its factorization.

1255730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17953.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1255730 is about 1120.5935926999. The cubic root of 1255730 is about 107.8860824435.

The spelling of 1255730 in words is "one million, two hundred fifty-five thousand, seven hundred thirty".