135947860 has 24 divisors (see below), whose sum is σ = 286612200. Its totient is φ = 54165504.

The previous prime is 135947857. The next prime is 135947863. The reversal of 135947860 is 68749531.

It is an interprime number because it is at equal distance from previous prime (135947857) and next prime (135947863).

It can be written as a sum of positive squares in 4 ways, for example, as 22695696 + 113252164 = 4764^2 + 10642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135947863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8085 + ... + 18364.

It is an arithmetic number, because the mean of its divisors is an integer number (11942175).

Almost surely, 2^135947860 is an apocalyptic number.

135947860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135947860 is an abundant number, since it is smaller than the sum of its proper divisors (150664340).

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

135947860 is a wasteful number, since it uses less digits than its factorization.

135947860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26715 (or 26713 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 135947860 is about 11659.6680913309. The cubic root of 135947860 is about 514.1905907989.

The spelling of 135947860 in words is "one hundred thirty-five million, nine hundred forty-seven thousand, eight hundred sixty".