133872040 has 16 divisors (see below), whose sum is σ = 301212180. Its totient is φ = 53548800.

The previous prime is 133871989. The next prime is 133872041. The reversal of 133872040 is 40278331.

It can be written as a sum of positive squares in 2 ways, for example, as 114105124 + 19766916 = 10682^2 + 4446^2 .

It is not an unprimeable number, because it can be changed into a prime (133872041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673361 + ... + 1673440.

Almost surely, 2^133872040 is an apocalyptic number.

133872040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133872040 is an abundant number, since it is smaller than the sum of its proper divisors (167340140).

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

133872040 is a wasteful number, since it uses less digits than its factorization.

133872040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346812 (or 3346808 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 133872040 is about 11570.3085524976. The cubic root of 133872040 is about 511.5600570586.

The spelling of 133872040 in words is "one hundred thirty-three million, eight hundred seventy-two thousand, forty".