134445780 has 72 divisors (see below), whose sum is σ = 466083072. Its totient is φ = 30730176.

The previous prime is 134445761. The next prime is 134445781. The reversal of 134445780 is 87544431.

134445780 is a `hidden beast` number, since 134 + 445 + 7 + 80 = 666.

134445780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134445781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52092 + ... + 54611.

It is an arithmetic number, because the mean of its divisors is an integer number (6473376).

Almost surely, 2^134445780 is an apocalyptic number.

134445780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134445780 is an abundant number, since it is smaller than the sum of its proper divisors (331637292).

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

134445780 is a wasteful number, since it uses less digits than its factorization.

134445780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106725 (or 106720 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 134445780 is about 11595.0756789251. The cubic root of 134445780 is about 512.2898190298.

The spelling of 134445780 in words is "one hundred thirty-four million, four hundred forty-five thousand, seven hundred eighty".