29220851 has 4 divisors (see below), whose sum is σ = 31877304. Its totient is φ = 26564400.

The previous prime is 29220839. The next prime is 29220853. The reversal of 29220851 is 15802292.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29220851 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1328210 + ... + 1328231.

It is an arithmetic number, because the mean of its divisors is an integer number (7969326).

Almost surely, 2^29220851 is an apocalyptic number.

29220851 is a deficient number, since it is larger than the sum of its proper divisors (2656453).

29220851 is a wasteful number, since it uses less digits than its factorization.

29220851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656452.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 29220851 is about 5405.6314154778. The cubic root of 29220851 is about 308.0096240035.

The spelling of 29220851 in words is "twenty-nine million, two hundred twenty thousand, eight hundred fifty-one".