133345438 has 8 divisors (see below), whose sum is σ = 201292632. Its totient is φ = 66247896.

The previous prime is 133345427. The next prime is 133345453. The reversal of 133345438 is 834543331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 212020 + ... + 212647.

It is an arithmetic number, because the mean of its divisors is an integer number (25161579).

Almost surely, 2^133345438 is an apocalyptic number.

133345438 is a deficient number, since it is larger than the sum of its proper divisors (67947194).

133345438 is a wasteful number, since it uses less digits than its factorization.

133345438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424826.

The product of its digits is 51840, while the sum is 34.

The square root of 133345438 is about 11547.5295193388. The cubic root of 133345438 is about 510.8884143283. Note that the first 3 decimals are identical.

Adding to 133345438 its reverse (834543331), we get a palindrome (967888769).

The spelling of 133345438 in words is "one hundred thirty-three million, three hundred forty-five thousand, four hundred thirty-eight".