133299290 has 16 divisors (see below), whose sum is σ = 244006560. Its totient is φ = 52415760.

The previous prime is 133299289. The next prime is 133299301. The reversal of 133299290 is 92992331.

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, 112376 + ... + 113555.

It is an arithmetic number, because the mean of its divisors is an integer number (15250410).

Almost surely, 2^133299290 is an apocalyptic number.

133299290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133299290 is a deficient number, since it is larger than the sum of its proper divisors (110707270).

133299290 is a wasteful number, since it uses less digits than its factorization.

133299290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225997.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 133299290 is about 11545.5311701108. The cubic root of 133299290 is about 510.8294716823.

The spelling of 133299290 in words is "one hundred thirty-three million, two hundred ninety-nine thousand, two hundred ninety".