29308040 has 32 divisors (see below), whose sum is σ = 66853080. Its totient is φ = 11561472.

The previous prime is 29308039. The next prime is 29308087. The reversal of 29308040 is 4080392.

It can be written as a sum of positive squares in 4 ways, for example, as 22221796 + 7086244 = 4714^2 + 2662^2 .

It is a super-2 number, since 2×29308040² = 1717922417283200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2099 + ... + 7938.

Almost surely, 2^29308040 is an apocalyptic number.

29308040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29308040 is an abundant number, since it is smaller than the sum of its proper divisors (37545040).

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

29308040 is a wasteful number, since it uses less digits than its factorization.

29308040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121 (or 10117 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 29308040 is about 5413.6900539281. The cubic root of 29308040 is about 308.3156655731.

The spelling of 29308040 in words is "twenty-nine million, three hundred eight thousand, forty".