133943490 has 64 divisors (see below), whose sum is σ = 372729600. Its totient is φ = 34163712.

The previous prime is 133943479. The next prime is 133943497. The reversal of 133943490 is 94349331.

133943490 is a `hidden beast` number, since 133 + 9 + 434 + 90 = 666.

It is not an unprimeable number, because it can be changed into a prime (133943497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4575 + ... + 16994.

It is an arithmetic number, because the mean of its divisors is an integer number (5823900).

Almost surely, 2^133943490 is an apocalyptic number.

133943490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133943490 is an abundant number, since it is smaller than the sum of its proper divisors (238786110).

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

133943490 is a wasteful number, since it uses less digits than its factorization.

133943490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21608 (or 21602 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 133943490 is about 11573.3957851618. The cubic root of 133943490 is about 511.6510505808.

The spelling of 133943490 in words is "one hundred thirty-three million, nine hundred forty-three thousand, four hundred ninety".