29020905 has 12 divisors (see below), whose sum is σ = 50302980. Its totient is φ = 15477792.

The previous prime is 29020903. The next prime is 29020993. The reversal of 29020905 is 50902092.

It can be written as a sum of positive squares in 2 ways, for example, as 22924944 + 6095961 = 4788^2 + 2469^2 .

It is not a de Polignac number, because 29020905 - 2¹ = 29020903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29020903) 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, 322410 + ... + 322499.

It is an arithmetic number, because the mean of its divisors is an integer number (4191915).

Almost surely, 2^29020905 is an apocalyptic number.

It is an amenable number.

29020905 is a deficient number, since it is larger than the sum of its proper divisors (21282075).

29020905 is a wasteful number, since it uses less digits than its factorization.

29020905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644920 (or 644917 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 29020905 is about 5387.1054379880. The cubic root of 29020905 is about 307.3054887255.

Adding to 29020905 its reverse (50902092), we get a palindrome (79922997).

The spelling of 29020905 in words is "twenty-nine million, twenty thousand, nine hundred five".