1306423770 has 32 divisors (see below), whose sum is σ = 3144477888. Its totient is φ = 347372928.

The previous prime is 1306423757. The next prime is 1306423771. The reversal of 1306423770 is 773246031.

It is a super-3 number, since 3×1306423770³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306423771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52339 + ... + 73158.

It is an arithmetic number, because the mean of its divisors is an integer number (98264934).

Almost surely, 2^1306423770 is an apocalyptic number.

1306423770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1306423770 is an abundant number, since it is smaller than the sum of its proper divisors (1838054118).

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

1306423770 is a wasteful number, since it uses less digits than its factorization.

1306423770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125854.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 1306423770 is about 36144.4846415051. The cubic root of 1306423770 is about 1093.1875858127.

The spelling of 1306423770 in words is "one billion, three hundred six million, four hundred twenty-three thousand, seven hundred seventy".