29422428 has 96 divisors (see below), whose sum is σ = 83241984. Its totient is φ = 7907328.

The previous prime is 29422399. The next prime is 29422429. The reversal of 29422428 is 82422492.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29422429) 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 31 ways as a sum of consecutive naturals, for example, 187326 + ... + 187482.

It is an arithmetic number, because the mean of its divisors is an integer number (867104).

Almost surely, 2^29422428 is an apocalyptic number.

29422428 is a gapful number since it is divisible by the number (28) 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 29422428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41620992).

29422428 is an abundant number, since it is smaller than the sum of its proper divisors (53819556).

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

29422428 is a wasteful number, since it uses less digits than its factorization.

29422428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 289 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 29422428 is about 5424.2444635175. The cubic root of 29422428 is about 308.7162590500.

It can be divided in two parts, 294 and 22428, that added together give a palindrome (22722).

The spelling of 29422428 in words is "twenty-nine million, four hundred twenty-two thousand, four hundred twenty-eight".