133943880 has 64 divisors (see below), whose sum is σ = 459239040. Its totient is φ = 30615552.

The previous prime is 133943869. The next prime is 133943897. The reversal of 133943880 is 88349331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78889 + ... + 80568.

It is an arithmetic number, because the mean of its divisors is an integer number (7175610).

Almost surely, 2^133943880 is an apocalyptic number.

133943880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133943880 is an abundant number, since it is smaller than the sum of its proper divisors (325295160).

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

133943880 is a wasteful number, since it uses less digits than its factorization.

133943880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159478 (or 159474 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 133943880 is about 11573.4126341369. The cubic root of 133943880 is about 511.6515471676.

The spelling of 133943880 in words is "one hundred thirty-three million, nine hundred forty-three thousand, eight hundred eighty".