129622623 has 16 divisors (see below), whose sum is σ = 186740736. Its totient is φ = 79503840.

The previous prime is 129622613. The next prime is 129622631. The reversal of 129622623 is 326226921.

It is not a de Polignac number, because 129622623 - 2¹⁰ = 129621599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129622613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6786 + ... + 17472.

It is an arithmetic number, because the mean of its divisors is an integer number (11671296).

Almost surely, 2^129622623 is an apocalyptic number.

129622623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

129622623 is a deficient number, since it is larger than the sum of its proper divisors (57118113).

129622623 is a wasteful number, since it uses less digits than its factorization.

129622623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11014.

The product of its digits is 15552, while the sum is 33.

The square root of 129622623 is about 11385.1931472417. The cubic root of 129622623 is about 506.0890434203.

The spelling of 129622623 in words is "one hundred twenty-nine million, six hundred twenty-two thousand, six hundred twenty-three".