29220028 has 12 divisors (see below), whose sum is σ = 53358480. Its totient is φ = 13974752.

The previous prime is 29220001. The next prime is 29220029. The reversal of 29220028 is 82002292.

It is a junction number, because it is equal to n+sod(n) for n = 29219984 and 29220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29220029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158713 + ... + 158896.

It is an arithmetic number, because the mean of its divisors is an integer number (4446540).

Almost surely, 2^29220028 is an apocalyptic number.

It is an amenable number.

29220028 is a deficient number, since it is larger than the sum of its proper divisors (24138452).

29220028 is a wasteful number, since it uses less digits than its factorization.

29220028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317636 (or 317634 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 29220028 is about 5405.5552906246. Note that the first 3 decimals coincide. The cubic root of 29220028 is about 308.0067322979.

The spelling of 29220028 in words is "twenty-nine million, two hundred twenty thousand, twenty-eight".