133613248 has 28 divisors (see below), whose sum is σ = 267726160. Its totient is φ = 66154752.

The previous prime is 133613239. The next prime is 133613257. The reversal of 133613248 is 842316331.

It is an interprime number because it is at equal distance from previous prime (133613239) and next prime (133613257).

It is a super-2 number, since 2×133613248² = 35705000082219008, which contains 22 as substring.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3543 + ... + 16726.

Almost surely, 2^133613248 is an apocalyptic number.

It is an amenable number.

133613248 is an abundant number, since it is smaller than the sum of its proper divisors (134112912).

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

133613248 is a wasteful number, since it uses less digits than its factorization.

133613248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20384 (or 20374 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 133613248 is about 11559.1196896650. The cubic root of 133613248 is about 511.2302071274.

Adding to 133613248 its reverse (842316331), we get a palindrome (975929579).

The spelling of 133613248 in words is "one hundred thirty-three million, six hundred thirteen thousand, two hundred forty-eight".