133400248 has 16 divisors (see below), whose sum is σ = 251166960. Its totient is φ = 66422400.

The previous prime is 133400243. The next prime is 133400251. The reversal of 133400248 is 842004331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133400243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32668 + ... + 36523.

It is an arithmetic number, because the mean of its divisors is an integer number (15697935).

Almost surely, 2^133400248 is an apocalyptic number.

It is an amenable number.

133400248 is a deficient number, since it is larger than the sum of its proper divisors (117766712).

133400248 is a wasteful number, since it uses less digits than its factorization.

133400248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69438 (or 69434 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 133400248 is about 11549.9025104111. The cubic root of 133400248 is about 510.9584028700.

Adding to 133400248 its reverse (842004331), we get a palindrome (975404579).

The spelling of 133400248 in words is "one hundred thirty-three million, four hundred thousand, two hundred forty-eight".