29009172 has 12 divisors (see below), whose sum is σ = 67688096. Its totient is φ = 9669720.

The previous prime is 29009131. The next prime is 29009173. The reversal of 29009172 is 27190092.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29009173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208704 + ... + 1208727.

Almost surely, 2^29009172 is an apocalyptic number.

It is an amenable number.

29009172 is an abundant number, since it is smaller than the sum of its proper divisors (38678924).

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

29009172 is a wasteful number, since it uses less digits than its factorization.

29009172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417438 (or 2417436 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 29009172 is about 5386.0163386310. The cubic root of 29009172 is about 307.2640691429.

The spelling of 29009172 in words is "twenty-nine million, nine thousand, one hundred seventy-two".