29697228 has 72 divisors (see below), whose sum is σ = 86224320. Its totient is φ = 8523360.

The previous prime is 29697169. The next prime is 29697251. The reversal of 29697228 is 82279692.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5551 + ... + 9497.

It is an arithmetic number, because the mean of its divisors is an integer number (1197560).

Almost surely, 2^29697228 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 29697228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43112160).

29697228 is an abundant number, since it is smaller than the sum of its proper divisors (56527092).

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

29697228 is a wasteful number, since it uses less digits than its factorization.

29697228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3982 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 29697228 is about 5449.5163088113. The cubic root of 29697228 is about 309.6743997227.

The spelling of 29697228 in words is "twenty-nine million, six hundred ninety-seven thousand, two hundred twenty-eight".