133787812 has 24 divisors (see below), whose sum is σ = 236718720. Its totient is φ = 66158400.

The previous prime is 133787791. The next prime is 133787831. The reversal of 133787812 is 218787331.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216528 + ... + 217144.

It is an arithmetic number, because the mean of its divisors is an integer number (9863280).

Almost surely, 2^133787812 is an apocalyptic number.

It is an amenable number.

133787812 is a deficient number, since it is larger than the sum of its proper divisors (102930908).

133787812 is a wasteful number, since it uses less digits than its factorization.

133787812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1129 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 133787812 is about 11566.6681460134. The cubic root of 133787812 is about 511.4527488158.

The spelling of 133787812 in words is "one hundred thirty-three million, seven hundred eighty-seven thousand, eight hundred twelve".