29220224 has 32 divisors (see below), whose sum is σ = 63507240. Its totient is φ = 13281280.

The previous prime is 29220223. The next prime is 29220227. The reversal of 29220224 is 42202292.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×29220224² = 1707642981220352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29220224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29220223) 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, 8969 + ... + 11784.

Almost surely, 2^29220224 is an apocalyptic number.

It is an amenable number.

29220224 is an abundant number, since it is smaller than the sum of its proper divisors (34287016).

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

29220224 is a wasteful number, since it uses less digits than its factorization.

29220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20778 (or 20766 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 29220224 is about 5405.5734200915. The cubic root of 29220224 is about 308.0074209715.

The spelling of 29220224 in words is "twenty-nine million, two hundred twenty thousand, two hundred twenty-four".