129786464 has 24 divisors (see below), whose sum is σ = 255816288. Its totient is φ = 64817280.

The previous prime is 129786439. The next prime is 129786499. The reversal of 129786464 is 464687921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33929 + ... + 37559.

It is an arithmetic number, because the mean of its divisors is an integer number (10659012).

Almost surely, 2^129786464 is an apocalyptic number.

It is an amenable number.

129786464 is a deficient number, since it is larger than the sum of its proper divisors (126029824).

129786464 is a wasteful number, since it uses less digits than its factorization.

129786464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758 (or 4750 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 129786464 is about 11392.3862294078. The cubic root of 129786464 is about 506.3021832303.

The spelling of 129786464 in words is "one hundred twenty-nine million, seven hundred eighty-six thousand, four hundred sixty-four".