133369988 has 12 divisors (see below), whose sum is σ = 233577792. Its totient is φ = 66633480.

The previous prime is 133369979. The next prime is 133369997. The reversal of 133369988 is 889963331.

It is an interprime number because it is at equal distance from previous prime (133369979) and next prime (133369997).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6728 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (19464816).

Almost surely, 2^133369988 is an apocalyptic number.

It is an amenable number.

133369988 is a deficient number, since it is larger than the sum of its proper divisors (100207804).

133369988 is a wasteful number, since it uses less digits than its factorization.

133369988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25762 (or 25760 counting only the distinct ones).

The product of its digits is 839808, while the sum is 50.

The square root of 133369988 is about 11548.5924683487. The cubic root of 133369988 is about 510.9197653344.

The spelling of 133369988 in words is "one hundred thirty-three million, three hundred sixty-nine thousand, nine hundred eighty-eight".