33136420 has 48 divisors (see below), whose sum is σ = 71589168. Its totient is φ = 12879360.

The previous prime is 33136403. The next prime is 33136421. The reversal of 33136420 is 2463133.

It can be written as a sum of positive squares in 8 ways, for example, as 1865956 + 31270464 = 1366^2 + 5592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 33136391 and 33136400.

It is not an unprimeable number, because it can be changed into a prime (33136421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191454 + ... + 191626.

It is an arithmetic number, because the mean of its divisors is an integer number (1491441).

Almost surely, 2^33136420 is an apocalyptic number.

It is an amenable number.

33136420 is an abundant number, since it is smaller than the sum of its proper divisors (38452748).

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

33136420 is a wasteful number, since it uses less digits than its factorization.

33136420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 33136420 is about 5756.4242373196. The cubic root of 33136420 is about 321.1948170896.

Adding to 33136420 its reverse (2463133), we get a palindrome (35599553).

The spelling of 33136420 in words is "thirty-three million, one hundred thirty-six thousand, four hundred twenty".