29220873 has 12 divisors (see below), whose sum is σ = 42548304. Its totient is φ = 17690800.

The previous prime is 29220869. The next prime is 29220881. The reversal of 29220873 is 37802292.

It is not a de Polignac number, because 29220873 - 2² = 29220869 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (29220853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30583 + ... + 31523.

It is an arithmetic number, because the mean of its divisors is an integer number (3545692).

Almost surely, 2^29220873 is an apocalyptic number.

It is an amenable number.

29220873 is a deficient number, since it is larger than the sum of its proper divisors (13327431).

29220873 is an frugal number, since it uses more digits than its factorization.

29220873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 29220873 is about 5405.6334503923. The cubic root of 29220873 is about 308.0097013023.

Multiplying 29220873 by its sum of digits (33), we get a square (964288809 = 31053²).

29220873 divided by its sum of digits (33) gives a square (885481 = 941²).

The spelling of 29220873 in words is "twenty-nine million, two hundred twenty thousand, eight hundred seventy-three".