133717890 has 16 divisors (see below), whose sum is σ = 320923008. Its totient is φ = 35658096.

The previous prime is 133717847. The next prime is 133717931. The reversal of 133717890 is 98717331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228602 + ... + 2228661.

It is an arithmetic number, because the mean of its divisors is an integer number (20057688).

Almost surely, 2^133717890 is an apocalyptic number.

133717890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133717890 is an abundant number, since it is smaller than the sum of its proper divisors (187205118).

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

133717890 is a wasteful number, since it uses less digits than its factorization.

133717890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457273.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 133717890 is about 11563.6451865318. The cubic root of 133717890 is about 511.3636324992.

The spelling of 133717890 in words is "one hundred thirty-three million, seven hundred seventeen thousand, eight hundred ninety".