135578146 has 16 divisors (see below), whose sum is σ = 231501888. Its totient is φ = 58946800.

The previous prime is 135578143. The next prime is 135578147. The reversal of 135578146 is 641875531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135578099 and 135578108.

It is not an unprimeable number, because it can be changed into a prime (135578143) 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, 133465 + ... + 134476.

It is an arithmetic number, because the mean of its divisors is an integer number (14468868).

Almost surely, 2^135578146 is an apocalyptic number.

135578146 is a deficient number, since it is larger than the sum of its proper divisors (95923742).

135578146 is a wasteful number, since it uses less digits than its factorization.

135578146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267977.

The product of its digits is 100800, while the sum is 40.

The square root of 135578146 is about 11643.8029011144. The cubic root of 135578146 is about 513.7240490638.

The spelling of 135578146 in words is "one hundred thirty-five million, five hundred seventy-eight thousand, one hundred forty-six".