133636420 has 24 divisors (see below), whose sum is σ = 281139264. Its totient is φ = 53358816.

The previous prime is 133636411. The next prime is 133636427. The reversal of 133636420 is 24636331.

It is not an unprimeable number, because it can be changed into a prime (133636427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6049 + ... + 17431.

It is an arithmetic number, because the mean of its divisors is an integer number (11714136).

Almost surely, 2^133636420 is an apocalyptic number.

133636420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133636420 is an abundant number, since it is smaller than the sum of its proper divisors (147502844).

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

133636420 is a wasteful number, since it uses less digits than its factorization.

133636420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11979 (or 11977 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 133636420 is about 11560.1219716749. The cubic root of 133636420 is about 511.2597589416.

The spelling of 133636420 in words is "one hundred thirty-three million, six hundred thirty-six thousand, four hundred twenty".