133772836 has 6 divisors (see below), whose sum is σ = 234102470. Its totient is φ = 66886416.

The previous prime is 133772831. The next prime is 133772861. The reversal of 133772836 is 638277331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117852736 + 15920100 = 10856^2 + 3990^2 .

It is not an unprimeable number, because it can be changed into a prime (133772831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721601 + ... + 16721608.

Almost surely, 2^133772836 is an apocalyptic number.

It is an amenable number.

133772836 is a deficient number, since it is larger than the sum of its proper divisors (100329634).

133772836 is a wasteful number, since it uses less digits than its factorization.

133772836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33443213 (or 33443211 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 133772836 is about 11566.0207504569. The cubic root of 133772836 is about 511.4336643614.

The spelling of 133772836 in words is "one hundred thirty-three million, seven hundred seventy-two thousand, eight hundred thirty-six".