133787976 has 64 divisors (see below), whose sum is σ = 387523200. Its totient is φ = 37698048.

The previous prime is 133787959. The next prime is 133787981. The reversal of 133787976 is 679787331.

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, 6810 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (6055050).

Almost surely, 2^133787976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133787976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193761600).

133787976 is an abundant number, since it is smaller than the sum of its proper divisors (253735224).

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

133787976 is a wasteful number, since it uses less digits than its factorization.

133787976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10998 (or 10994 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 51.

The square root of 133787976 is about 11566.6752353475. The cubic root of 133787976 is about 511.4529577990.

The spelling of 133787976 in words is "one hundred thirty-three million, seven hundred eighty-seven thousand, nine hundred seventy-six".