30072158 has 4 divisors (see below), whose sum is σ = 45108240. Its totient is φ = 15036078.

The previous prime is 30072149. The next prime is 30072181. The reversal of 30072158 is 85127003.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7518038 + ... + 7518041.

It is an arithmetic number, because the mean of its divisors is an integer number (11277060).

Almost surely, 2^30072158 is an apocalyptic number.

30072158 is a deficient number, since it is larger than the sum of its proper divisors (15036082).

30072158 is a wasteful number, since it uses less digits than its factorization.

30072158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15036081.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 30072158 is about 5483.8087129294. The cubic root of 30072158 is about 310.9721752176.

The spelling of 30072158 in words is "thirty million, seventy-two thousand, one hundred fifty-eight".