29145805 has 8 divisors (see below), whose sum is σ = 37665432. Its totient is φ = 21523008.

The previous prime is 29145799. The next prime is 29145827. The reversal of 29145805 is 50854192.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 28869129 = 526^2 + 5373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29145805 - 2¹¹ = 29143757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224134 + ... + 224263.

It is an arithmetic number, because the mean of its divisors is an integer number (4708179).

Almost surely, 2^29145805 is an apocalyptic number.

It is an amenable number.

29145805 is a deficient number, since it is larger than the sum of its proper divisors (8519627).

29145805 is a wasteful number, since it uses less digits than its factorization.

29145805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448415.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 29145805 is about 5398.6854881536. The cubic root of 29145805 is about 307.7457176275.

Adding to 29145805 its reverse (50854192), we get a palindrome (79999997).

The spelling of 29145805 in words is "twenty-nine million, one hundred forty-five thousand, eight hundred five".