135780436 has 24 divisors (see below), whose sum is σ = 268158240. Its totient is φ = 59589600.

The previous prime is 135780427. The next prime is 135780439. The reversal of 135780436 is 634087531.

It is a junction number, because it is equal to n+sod(n) for n = 135780395 and 135780404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135780439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51930 + ... + 54481.

It is an arithmetic number, because the mean of its divisors is an integer number (11173260).

Almost surely, 2^135780436 is an apocalyptic number.

It is an amenable number.

135780436 is a deficient number, since it is larger than the sum of its proper divisors (132377804).

135780436 is a wasteful number, since it uses less digits than its factorization.

135780436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106455 (or 106453 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 135780436 is about 11652.4862583056. The cubic root of 135780436 is about 513.9794235431.

The spelling of 135780436 in words is "one hundred thirty-five million, seven hundred eighty thousand, four hundred thirty-six".