29228819 has 2 divisors, whose sum is σ = 29228820. Its totient is φ = 29228818.

The previous prime is 29228809. The next prime is 29228861. The reversal of 29228819 is 91882292.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29228819 - 2⁴ = 29228803 is a prime.

It is a super-2 number, since 2×29228819² = 1708647720269522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29228809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14614409 + 14614410.

It is an arithmetic number, because the mean of its divisors is an integer number (14614410).

Almost surely, 2^29228819 is an apocalyptic number.

29228819 is a deficient number, since it is larger than the sum of its proper divisors (1).

29228819 is an equidigital number, since it uses as much as digits as its factorization.

29228819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 29228819 is about 5406.3683744266. The cubic root of 29228819 is about 308.0376176857.

It can be divided in two parts, 292 and 28819, that multiplied together give a palindrome (8415148).

The spelling of 29228819 in words is "twenty-nine million, two hundred twenty-eight thousand, eight hundred nineteen".