29245640 has 16 divisors (see below), whose sum is σ = 65802780. Its totient is φ = 11698240.

The previous prime is 29245639. The next prime is 29245649. The reversal of 29245640 is 4654292.

It can be written as a sum of positive squares in 2 ways, for example, as 25867396 + 3378244 = 5086^2 + 1838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29245597 and 29245606.

It is not an unprimeable number, because it can be changed into a prime (29245649) 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 3 ways as a sum of consecutive naturals, for example, 365531 + ... + 365610.

Almost surely, 2^29245640 is an apocalyptic number.

29245640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29245640 is an abundant number, since it is smaller than the sum of its proper divisors (36557140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29245640 is a wasteful number, since it uses less digits than its factorization.

29245640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731152 (or 731148 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 29245640 is about 5407.9238160314. The cubic root of 29245640 is about 308.0966975857.

The spelling of 29245640 in words is "twenty-nine million, two hundred forty-five thousand, six hundred forty".