133279056 has 60 divisors (see below), whose sum is σ = 374951200. Its totient is φ = 44193600.

The previous prime is 133279049. The next prime is 133279057. The reversal of 133279056 is 650972331.

It is a super-2 number, since 2×133279056² = 35526613536502272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 133279056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133279057) 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, 26331 + ... + 30981.

Almost surely, 2^133279056 is an apocalyptic number.

133279056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133279056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187475600).

133279056 is an abundant number, since it is smaller than the sum of its proper divisors (241672144).

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

133279056 is a wasteful number, since it uses less digits than its factorization.

133279056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864 (or 4855 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 133279056 is about 11544.6548670803. The cubic root of 133279056 is about 510.8036234662.

The spelling of 133279056 in words is "one hundred thirty-three million, two hundred seventy-nine thousand, fifty-six".