29921190 has 64 divisors (see below), whose sum is σ = 81902016. Its totient is φ = 6930432.

The previous prime is 29921189. The next prime is 29921237. The reversal of 29921190 is 9112992.

It is a super-2 number, since 2×29921190² = 1790555222032200, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 4374 + ... + 8886.

It is an arithmetic number, because the mean of its divisors is an integer number (1279719).

Almost surely, 2^29921190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29921190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40951008).

29921190 is an abundant number, since it is smaller than the sum of its proper divisors (51980826).

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

29921190 is a wasteful number, since it uses less digits than its factorization.

29921190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 29921190 is about 5470.0265081625. The cubic root of 29921190 is about 310.4509219938.

The spelling of 29921190 in words is "twenty-nine million, nine hundred twenty-one thousand, one hundred ninety".