30158247 has 16 divisors (see below), whose sum is σ = 47077632. Its totient is φ = 16812480.

The previous prime is 30158237. The next prime is 30158281. The reversal of 30158247 is 74285103.

It is not a de Polignac number, because 30158247 - 2¹¹ = 30156199 is a prime.

It is a super-2 number, since 2×30158247² = 1819039724226018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30158207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16653 + ... + 18374.

It is an arithmetic number, because the mean of its divisors is an integer number (2942352).

Almost surely, 2^30158247 is an apocalyptic number.

30158247 is a deficient number, since it is larger than the sum of its proper divisors (16919385).

30158247 is a wasteful number, since it uses less digits than its factorization.

30158247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35078.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 30158247 is about 5491.6524835426. The cubic root of 30158247 is about 311.2686374543.

The spelling of 30158247 in words is "thirty million, one hundred fifty-eight thousand, two hundred forty-seven".