29081320 has 32 divisors (see below), whose sum is σ = 65586600. Its totient is φ = 11605248.

The previous prime is 29081257. The next prime is 29081347. The reversal of 29081320 is 2318092.

It can be written as a sum of positive squares in 4 ways, for example, as 27478564 + 1602756 = 5242^2 + 1266^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32722 + ... + 33598.

Almost surely, 2^29081320 is an apocalyptic number.

29081320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29081320 is an abundant number, since it is smaller than the sum of its proper divisors (36505280).

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

29081320 is a wasteful number, since it uses less digits than its factorization.

29081320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 29081320 is about 5392.7098939216. The cubic root of 29081320 is about 307.5185878997.

The spelling of 29081320 in words is "twenty-nine million, eighty-one thousand, three hundred twenty".