30138376 has 8 divisors (see below), whose sum is σ = 56509470. Its totient is φ = 15069184.

The previous prime is 30138371. The next prime is 30138401. The reversal of 30138376 is 67383103.

It can be written as a sum of positive squares in only one way, i.e., 24502500 + 5635876 = 4950^2 + 2374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (30138371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883641 + ... + 1883656.

Almost surely, 2^30138376 is an apocalyptic number.

It is an amenable number.

30138376 is a deficient number, since it is larger than the sum of its proper divisors (26371094).

30138376 is a wasteful number, since it uses less digits than its factorization.

30138376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767303 (or 3767299 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30138376 is about 5489.8429850042. The cubic root of 30138376 is about 311.2002583909.

The spelling of 30138376 in words is "thirty million, one hundred thirty-eight thousand, three hundred seventy-six".