133285436 has 6 divisors (see below), whose sum is σ = 233249520. Its totient is φ = 66642716.

The previous prime is 133285429. The next prime is 133285447. The reversal of 133285436 is 634582331.

133285436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 133285396 and 133285405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16660676 + ... + 16660683.

It is an arithmetic number, because the mean of its divisors is an integer number (38874920).

Almost surely, 2^133285436 is an apocalyptic number.

It is an amenable number.

133285436 is a deficient number, since it is larger than the sum of its proper divisors (99964084).

133285436 is a wasteful number, since it uses less digits than its factorization.

133285436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33321363 (or 33321361 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 133285436 is about 11544.9311821249. The cubic root of 133285436 is about 510.8117739719.

It can be divided in two parts, 1332 and 85436, that added together give a palindrome (86768).

The spelling of 133285436 in words is "one hundred thirty-three million, two hundred eighty-five thousand, four hundred thirty-six".