133872648 has 64 divisors (see below), whose sum is σ = 411922560. Its totient is φ = 35306496.

The previous prime is 133872617. The next prime is 133872649. The reversal of 133872648 is 846278331.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (133872649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28465 + ... + 32832.

It is an arithmetic number, because the mean of its divisors is an integer number (6436290).

Almost surely, 2^133872648 is an apocalyptic number.

It is an amenable number.

133872648 is an abundant number, since it is smaller than the sum of its proper divisors (278049912).

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

133872648 is a wasteful number, since it uses less digits than its factorization.

133872648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61326 (or 61322 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 133872648 is about 11570.3348266159. The cubic root of 133872648 is about 511.5608314997.

The spelling of 133872648 in words is "one hundred thirty-three million, eight hundred seventy-two thousand, six hundred forty-eight".