135457780 has 24 divisors (see below), whose sum is σ = 285818400. Its totient is φ = 53924640.

The previous prime is 135457769. The next prime is 135457781. The reversal of 135457780 is 87754531.

135457780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135457781) 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, 11830 + ... + 20269.

It is an arithmetic number, because the mean of its divisors is an integer number (11909100).

Almost surely, 2^135457780 is an apocalyptic number.

135457780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135457780 is an abundant number, since it is smaller than the sum of its proper divisors (150360620).

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

135457780 is a wasteful number, since it uses less digits than its factorization.

135457780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32319 (or 32317 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 135457780 is about 11638.6330812514. The cubic root of 135457780 is about 513.5719763325.

The spelling of 135457780 in words is "one hundred thirty-five million, four hundred fifty-seven thousand, seven hundred eighty".