133879480 has 64 divisors (see below), whose sum is σ = 346680000. Its totient is φ = 45579264.

The previous prime is 133879477. The next prime is 133879489. The reversal of 133879480 is 84978331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133879489) 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, 40116 + ... + 43324.

It is an arithmetic number, because the mean of its divisors is an integer number (5416875).

Almost surely, 2^133879480 is an apocalyptic number.

133879480 is a gapful number since it is divisible by the number (10) 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 133879480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173340000).

133879480 is an abundant number, since it is smaller than the sum of its proper divisors (212800520).

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

133879480 is a wasteful number, since it uses less digits than its factorization.

133879480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376 (or 3372 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 133879480 is about 11570.6300606320. The cubic root of 133879480 is about 511.5695336112.

The spelling of 133879480 in words is "one hundred thirty-three million, eight hundred seventy-nine thousand, four hundred eighty".