134778444 has 12 divisors (see below), whose sum is σ = 314483064. Its totient is φ = 44926144.

The previous prime is 134778443. The next prime is 134778481. The reversal of 134778444 is 444877431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×134778444² = 36330457934122272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134778396 and 134778405.

It is not an unprimeable number, because it can be changed into a prime (134778443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5615757 + ... + 5615780.

It is an arithmetic number, because the mean of its divisors is an integer number (26206922).

Almost surely, 2^134778444 is an apocalyptic number.

It is an amenable number.

134778444 is an abundant number, since it is smaller than the sum of its proper divisors (179704620).

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

134778444 is a wasteful number, since it uses less digits than its factorization.

134778444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231544 (or 11231542 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 134778444 is about 11609.4118714085. The cubic root of 134778444 is about 512.7119966892.

The spelling of 134778444 in words is "one hundred thirty-four million, seven hundred seventy-eight thousand, four hundred forty-four".