30138034 has 16 divisors (see below), whose sum is σ = 46624536. Its totient is φ = 14601600.

The previous prime is 30138023. The next prime is 30138037. The reversal of 30138034 is 43083103.

It can be written as a sum of positive squares in 4 ways, for example, as 17514225 + 12623809 = 4185^2 + 3553^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30137996 and 30138014.

It is not an unprimeable number, because it can be changed into a prime (30138037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11704 + ... + 14044.

Almost surely, 2^30138034 is an apocalyptic number.

30138034 is a deficient number, since it is larger than the sum of its proper divisors (16486502).

30138034 is a wasteful number, since it uses less digits than its factorization.

30138034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30138034 is about 5489.8118364840. The cubic root of 30138034 is about 311.1990812550.

The spelling of 30138034 in words is "thirty million, one hundred thirty-eight thousand, thirty-four".