29259985 has 16 divisors (see below), whose sum is σ = 36487440. Its totient is φ = 22498560.

The previous prime is 29259977. The next prime is 29260031. The reversal of 29259985 is 58995292.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 229441 + 29030544 = 479^2 + 5388^2 .

It is not a de Polignac number, because 29259985 - 2³ = 29259977 is a prime.

It is a super-2 number, since 2×29259985² = 1712293444400450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53815 + ... + 54355.

It is an arithmetic number, because the mean of its divisors is an integer number (2280465).

Almost surely, 2^29259985 is an apocalyptic number.

29259985 is the 2705-th decagonal number.

It is an amenable number.

29259985 is a deficient number, since it is larger than the sum of its proper divisors (7227455).

29259985 is a wasteful number, since it uses less digits than its factorization.

29259985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its digits is 583200, while the sum is 49.

The square root of 29259985 is about 5409.2499480057. The cubic root of 29259985 is about 308.1470632095.

The spelling of 29259985 in words is "twenty-nine million, two hundred fifty-nine thousand, nine hundred eighty-five".