29081990 has 24 divisors (see below), whose sum is σ = 60895152. Its totient is φ = 9970800.

The previous prime is 29081981. The next prime is 29081993. The reversal of 29081990 is 9918092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29081993) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29186 + ... + 30165.

It is an arithmetic number, because the mean of its divisors is an integer number (2537298).

Almost surely, 2^29081990 is an apocalyptic number.

29081990 is an abundant number, since it is smaller than the sum of its proper divisors (31813162).

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

29081990 is a wasteful number, since it uses less digits than its factorization.

29081990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59372 (or 59365 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 29081990 is about 5392.7720144653. The cubic root of 29081990 is about 307.5209495058.

The spelling of 29081990 in words is "twenty-nine million, eighty-one thousand, nine hundred ninety".