133502290 has 16 divisors (see below), whose sum is σ = 246799512. Its totient is φ = 51957504.

The previous prime is 133502287. The next prime is 133502297. The reversal of 133502290 is 92205331.

It is a happy number.

133502290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 96766569 + 36735721 = 9837^2 + 6061^2 .

It is a super-2 number, since 2×133502290² = 35645722870488200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133502297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180039 + ... + 180778.

Almost surely, 2^133502290 is an apocalyptic number.

133502290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133502290 is a deficient number, since it is larger than the sum of its proper divisors (113297222).

133502290 is a wasteful number, since it uses less digits than its factorization.

133502290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360861.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 133502290 is about 11554.3191058582. The cubic root of 133502290 is about 511.0886523248.

The spelling of 133502290 in words is "one hundred thirty-three million, five hundred two thousand, two hundred ninety".