133204464 has 60 divisors (see below), whose sum is σ = 375012456. Its totient is φ = 44136576.

The previous prime is 133204457. The next prime is 133204471. The reversal of 133204464 is 464402331.

It is an interprime number because it is at equal distance from previous prime (133204457) and next prime (133204471).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22239 + ... + 27585.

Almost surely, 2^133204464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133204464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187506228).

133204464 is an abundant number, since it is smaller than the sum of its proper divisors (241807992).

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

133204464 is a wasteful number, since it uses less digits than its factorization.

133204464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534 (or 5525 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 133204464 is about 11541.4238289736. The cubic root of 133204464 is about 510.7083122314.

Adding to 133204464 its reverse (464402331), we get a palindrome (597606795).

The spelling of 133204464 in words is "one hundred thirty-three million, two hundred four thousand, four hundred sixty-four".