30157018 has 8 divisors (see below), whose sum is σ = 46287648. Its totient is φ = 14727804.

The previous prime is 30157007. The next prime is 30157019. The reversal of 30157018 is 81075103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30156983 and 30157001.

It is not an unprimeable number, because it can be changed into a prime (30157019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175246 + ... + 175417.

It is an arithmetic number, because the mean of its divisors is an integer number (5785956).

Almost surely, 2^30157018 is an apocalyptic number.

30157018 is a deficient number, since it is larger than the sum of its proper divisors (16130630).

30157018 is a wasteful number, since it uses less digits than its factorization.

30157018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350708.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 30157018 is about 5491.5405853003. The cubic root of 30157018 is about 311.2644091543.

The spelling of 30157018 in words is "thirty million, one hundred fifty-seven thousand, eighteen".