133640546 has 16 divisors (see below), whose sum is σ = 219542400. Its totient is φ = 60634128.

The previous prime is 133640537. The next prime is 133640609. The reversal of 133640546 is 645046331.

133640546 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42026 + ... + 45093.

It is an arithmetic number, because the mean of its divisors is an integer number (13721400).

Almost surely, 2^133640546 is an apocalyptic number.

133640546 is a deficient number, since it is larger than the sum of its proper divisors (85901854).

133640546 is a wasteful number, since it uses less digits than its factorization.

133640546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87193.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 133640546 is about 11560.3004286221. The cubic root of 133640546 is about 511.2650205712.

Adding to 133640546 its reverse (645046331), we get a palindrome (778686877).

The spelling of 133640546 in words is "one hundred thirty-three million, six hundred forty thousand, five hundred forty-six".