129623190 has 32 divisors (see below), whose sum is σ = 313479936. Its totient is φ = 34301280.

The previous prime is 129623189. The next prime is 129623233. The reversal of 129623190 is 91326921.

It is a super-2 number, since 2×129623190² = 33604342771552200, which contains 22 as substring.

It is a congruent number.

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, 12562 + ... + 20421.

It is an arithmetic number, because the mean of its divisors is an integer number (9796248).

Almost surely, 2^129623190 is an apocalyptic number.

129623190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129623190 is an abundant number, since it is smaller than the sum of its proper divisors (183856746).

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

129623190 is a wasteful number, since it uses less digits than its factorization.

129623190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33124.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 129623190 is about 11385.2180479778. The cubic root of 129623190 is about 506.0897813369.

The spelling of 129623190 in words is "one hundred twenty-nine million, six hundred twenty-three thousand, one hundred ninety".