133274890 has 32 divisors (see below), whose sum is σ = 283014144. Its totient is φ = 44219520.

The previous prime is 133274879. The next prime is 133274927. The reversal of 133274890 is 98472331.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28539 + ... + 32878.

It is an arithmetic number, because the mean of its divisors is an integer number (8844192).

Almost surely, 2^133274890 is an apocalyptic number.

133274890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133274890 is an abundant number, since it is smaller than the sum of its proper divisors (149739254).

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

133274890 is a wasteful number, since it uses less digits than its factorization.

133274890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61462.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 133274890 is about 11544.4744358503. The cubic root of 133274890 is about 510.7983012245.

The spelling of 133274890 in words is "one hundred thirty-three million, two hundred seventy-four thousand, eight hundred ninety".