29689620 has 96 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 7526400.

The previous prime is 29689603. The next prime is 29689631. The reversal of 29689620 is 2698692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196545 + ... + 196695.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 2^29689620 is an apocalyptic number.

29689620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29689620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666560).

29689620 is an abundant number, since it is smaller than the sum of its proper divisors (57643500).

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

29689620 is a wasteful number, since it uses less digits than its factorization.

29689620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 29689620 is about 5448.8182204952. The cubic root of 29689620 is about 309.6479527644.

The spelling of 29689620 in words is "twenty-nine million, six hundred eighty-nine thousand, six hundred twenty".