135969380 has 24 divisors (see below), whose sum is σ = 290925432. Its totient is φ = 53361152.

The previous prime is 135969347. The next prime is 135969403. The reversal of 135969380 is 83969531.

It can be written as a sum of positive squares in 4 ways, for example, as 1965604 + 134003776 = 1402^2 + 11576^2 .

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, 63077 + ... + 65196.

It is an arithmetic number, because the mean of its divisors is an integer number (12121893).

Almost surely, 2^135969380 is an apocalyptic number.

135969380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135969380 is an abundant number, since it is smaller than the sum of its proper divisors (154956052).

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

135969380 is a wasteful number, since it uses less digits than its factorization.

135969380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128335 (or 128333 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 135969380 is about 11660.5908941185. The cubic root of 135969380 is about 514.2177208023.

The spelling of 135969380 in words is "one hundred thirty-five million, nine hundred sixty-nine thousand, three hundred eighty".