29928130 has 16 divisors (see below), whose sum is σ = 54366840. Its totient is φ = 11860992.

The previous prime is 29928127. The next prime is 29928131. The reversal of 29928130 is 3182992.

It can be written as a sum of positive squares in 4 ways, for example, as 19018321 + 10909809 = 4361^2 + 3303^2 .

It is a super-3 number, since 3×29928130³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (29928131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12639 + ... + 14818.

Almost surely, 2^29928130 is an apocalyptic number.

29928130 is a deficient number, since it is larger than the sum of its proper divisors (24438710).

29928130 is a wasteful number, since it uses less digits than its factorization.

29928130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27573.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 29928130 is about 5470.6608375954. The cubic root of 29928130 is about 310.4749224078.

The spelling of 29928130 in words is "twenty-nine million, nine hundred twenty-eight thousand, one hundred thirty".