29691372 has 12 divisors (see below), whose sum is σ = 69279896. Its totient is φ = 9897120.

The previous prime is 29691359. The next prime is 29691377. The reversal of 29691372 is 27319692.

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

It is a self number, because there is not a number n which added to its sum of digits gives 29691372.

It is not an unprimeable number, because it can be changed into a prime (29691377) by changing a digit.

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, 1237129 + ... + 1237152.

Almost surely, 2^29691372 is an apocalyptic number.

It is an amenable number.

29691372 is an abundant number, since it is smaller than the sum of its proper divisors (39588524).

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

29691372 is a wasteful number, since it uses less digits than its factorization.

29691372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474288 (or 2474286 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 29691372 is about 5448.9789869296. The cubic root of 29691372 is about 309.6540434738.

The spelling of 29691372 in words is "twenty-nine million, six hundred ninety-one thousand, three hundred seventy-two".