133908378 has 32 divisors (see below), whose sum is σ = 275692032. Its totient is φ = 43334400.

The previous prime is 133908377. The next prime is 133908389. The reversal of 133908378 is 873809331.

It is not an unprimeable number, because it can be changed into a prime (133908373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53638 + ... + 56078.

It is an arithmetic number, because the mean of its divisors is an integer number (8615376).

Almost surely, 2^133908378 is an apocalyptic number.

133908378 is an abundant number, since it is smaller than the sum of its proper divisors (141783654).

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

133908378 is a wasteful number, since it uses less digits than its factorization.

133908378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 133908378 is about 11571.8787584385. The cubic root of 133908378 is about 511.6063385367.

The spelling of 133908378 in words is "one hundred thirty-three million, nine hundred eight thousand, three hundred seventy-eight".