133790445 has 12 divisors (see below), whose sum is σ = 231903516. Its totient is φ = 71354880.

The previous prime is 133790443. The next prime is 133790473. The reversal of 133790445 is 544097331.

It can be written as a sum of positive squares in 2 ways, for example, as 20304036 + 113486409 = 4506^2 + 10653^2 .

It is not a de Polignac number, because 133790445 - 2¹ = 133790443 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133790441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1486516 + ... + 1486605.

It is an arithmetic number, because the mean of its divisors is an integer number (19325293).

Almost surely, 2^133790445 is an apocalyptic number.

133790445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133790445 is a deficient number, since it is larger than the sum of its proper divisors (98113071).

133790445 is a wasteful number, since it uses less digits than its factorization.

133790445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973132 (or 2973129 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 133790445 is about 11566.7819638826. The cubic root of 133790445 is about 511.4561039950.

The spelling of 133790445 in words is "one hundred thirty-three million, seven hundred ninety thousand, four hundred forty-five".