29830138 has 16 divisors (see below), whose sum is σ = 51022440. Its totient is φ = 12957696.

The previous prime is 29830123. The next prime is 29830147. The reversal of 29830138 is 83103892.

It can be written as a sum of positive squares in 4 ways, for example, as 14876449 + 14953689 = 3857^2 + 3867^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33303 + ... + 34186.

Almost surely, 2^29830138 is an apocalyptic number.

29830138 is a deficient number, since it is larger than the sum of its proper divisors (21192302).

29830138 is a wasteful number, since it uses less digits than its factorization.

29830138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67521.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 29830138 is about 5461.6973552184. The cubic root of 29830138 is about 310.1356950166.

The spelling of 29830138 in words is "twenty-nine million, eight hundred thirty thousand, one hundred thirty-eight".