29979136 has 40 divisors (see below), whose sum is σ = 65357424. Its totient is φ = 13624320.

The previous prime is 29979133. The next prime is 29979137. The reversal of 29979136 is 63197992.

It is not an unprimeable number, because it can be changed into a prime (29979133) 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, 2971 + ... + 8293.

Almost surely, 2^29979136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29979136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32678712).

29979136 is an abundant number, since it is smaller than the sum of its proper divisors (35378288).

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

29979136 is an equidigital number, since it uses as much as digits as its factorization.

29979136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352 (or 5336 counting only the distinct ones).

The product of its digits is 183708, while the sum is 46.

The square root of 29979136 is about 5475.3206298810. The cubic root of 29979136 is about 310.6512013357.

The spelling of 29979136 in words is "twenty-nine million, nine hundred seventy-nine thousand, one hundred thirty-six".