29672145 has 24 divisors (see below), whose sum is σ = 51817896. Its totient is φ = 15706368.

The previous prime is 29672143. The next prime is 29672179. The reversal of 29672145 is 54127692.

It can be written as a sum of positive squares in 4 ways, for example, as 6718464 + 22953681 = 2592^2 + 4791^2 .

It is not a de Polignac number, because 29672145 - 2¹ = 29672143 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29672141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3759 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (2159079).

Almost surely, 2^29672145 is an apocalyptic number.

It is an amenable number.

29672145 is a deficient number, since it is larger than the sum of its proper divisors (22145751).

29672145 is a wasteful number, since it uses less digits than its factorization.

29672145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961 (or 4958 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 29672145 is about 5447.2144257409. The cubic root of 29672145 is about 309.5871889918.

The spelling of 29672145 in words is "twenty-nine million, six hundred seventy-two thousand, one hundred forty-five".