133620534 has 12 divisors (see below), whose sum is σ = 289511196. Its totient is φ = 44540172.

The previous prime is 133620533. The next prime is 133620551. The reversal of 133620534 is 435026331.

It is a happy number.

133620534 is a `hidden beast` number, since 1 + 3 + 3 + 620 + 5 + 34 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 133620498 and 133620507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133620533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3711664 + ... + 3711699.

It is an arithmetic number, because the mean of its divisors is an integer number (24125933).

Almost surely, 2^133620534 is an apocalyptic number.

133620534 is an abundant number, since it is smaller than the sum of its proper divisors (155890662).

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

133620534 is a wasteful number, since it uses less digits than its factorization.

133620534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423371 (or 7423368 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 133620534 is about 11559.4348477769. The cubic root of 133620534 is about 511.2394995084.

Adding to 133620534 its reverse (435026331), we get a palindrome (568646865).

The spelling of 133620534 in words is "one hundred thirty-three million, six hundred twenty thousand, five hundred thirty-four".