129788590 has 8 divisors (see below), whose sum is σ = 233619480. Its totient is φ = 51915432.

The previous prime is 129788567. The next prime is 129788597. The reversal of 129788590 is 95887921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129788597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6489420 + ... + 6489439.

It is an arithmetic number, because the mean of its divisors is an integer number (29202435).

Almost surely, 2^129788590 is an apocalyptic number.

129788590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129788590 is a deficient number, since it is larger than the sum of its proper divisors (103830890).

129788590 is a wasteful number, since it uses less digits than its factorization.

129788590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12978866.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 129788590 is about 11392.4795369577. The cubic root of 129788590 is about 506.3049477522.

The spelling of 129788590 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, five hundred ninety".