133378624 has 14 divisors (see below), whose sum is σ = 264673334. Its totient is φ = 66689280.

The previous prime is 133378577. The next prime is 133378643. The reversal of 133378624 is 426873331.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 63489024 = 8360^2 + 7968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041957 + ... + 1042084.

Almost surely, 2^133378624 is an apocalyptic number.

It is an amenable number.

133378624 is a deficient number, since it is larger than the sum of its proper divisors (131294710).

133378624 is an equidigital number, since it uses as much as digits as its factorization.

133378624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084053 (or 2084043 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 133378624 is about 11548.9663606749. The cubic root of 133378624 is about 510.9307928225.

The spelling of 133378624 in words is "one hundred thirty-three million, three hundred seventy-eight thousand, six hundred twenty-four".