133153878 has 32 divisors (see below), whose sum is σ = 312867072. Its totient is φ = 37245600.

The previous prime is 133153859. The next prime is 133153901. The reversal of 133153878 is 878351331.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76738 + ... + 78453.

It is an arithmetic number, because the mean of its divisors is an integer number (9777096).

Almost surely, 2^133153878 is an apocalyptic number.

133153878 is an abundant number, since it is smaller than the sum of its proper divisors (179713194).

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

133153878 is a wasteful number, since it uses less digits than its factorization.

133153878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155220.

The product of its digits is 60480, while the sum is 39.

The square root of 133153878 is about 11539.2321234994. The cubic root of 133153878 is about 510.6436548344.

The spelling of 133153878 in words is "one hundred thirty-three million, one hundred fifty-three thousand, eight hundred seventy-eight".