29991030 has 32 divisors (see below), whose sum is σ = 72658944. Its totient is φ = 7922016.

The previous prime is 29991019. The next prime is 29991037. The reversal of 29991030 is 3019992.

It is a junction number, because it is equal to n+sod(n) for n = 29990982 and 29991000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29991037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462 + ... + 7881.

It is an arithmetic number, because the mean of its divisors is an integer number (2270592).

Almost surely, 2^29991030 is an apocalyptic number.

29991030 is an abundant number, since it is smaller than the sum of its proper divisors (42667914).

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

29991030 is a wasteful number, since it uses less digits than its factorization.

29991030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9460.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 29991030 is about 5476.4066686104. The cubic root of 29991030 is about 310.6922787577.

The spelling of 29991030 in words is "twenty-nine million, nine hundred ninety-one thousand, thirty".