135312780 has 48 divisors (see below), whose sum is σ = 383685120. Its totient is φ = 35625408.

The previous prime is 135312773. The next prime is 135312791. The reversal of 135312780 is 87213531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9534 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (7993440).

Almost surely, 2^135312780 is an apocalyptic number.

135312780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135312780 is an abundant number, since it is smaller than the sum of its proper divisors (248372340).

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

135312780 is a wasteful number, since it uses less digits than its factorization.

135312780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28638 (or 28636 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 135312780 is about 11632.4021594854. The cubic root of 135312780 is about 513.3886608531.

The spelling of 135312780 in words is "one hundred thirty-five million, three hundred twelve thousand, seven hundred eighty".