30138196 has 36 divisors (see below), whose sum is σ = 58835476. Its totient is φ = 13495680.

The previous prime is 30138193. The next prime is 30138197. The reversal of 30138196 is 69183103.

It can be written as a sum of positive squares in 2 ways, for example, as 8179600 + 21958596 = 2860^2 + 4686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30138193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34906 + ... + 35758.

Almost surely, 2^30138196 is an apocalyptic number.

It is an amenable number.

30138196 is a deficient number, since it is larger than the sum of its proper divisors (28697280).

30138196 is a wasteful number, since it uses less digits than its factorization.

30138196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 30138196 is about 5489.8265910682. The cubic root of 30138196 is about 311.1996388468.

The spelling of 30138196 in words is "thirty million, one hundred thirty-eight thousand, one hundred ninety-six".