30272818 has 8 divisors (see below), whose sum is σ = 48080412. Its totient is φ = 14246016.

The previous prime is 30272789. The next prime is 30272819. The reversal of 30272818 is 81827203.

It can be written as a sum of positive squares in 2 ways, for example, as 30107169 + 165649 = 5487^2 + 407^2 .

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

It is a super-2 number, since 2×30272818² = 1832887019322248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30272818.

It is not an unprimeable number, because it can be changed into a prime (30272819) 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, 445155 + ... + 445222.

Almost surely, 2^30272818 is an apocalyptic number.

30272818 is a deficient number, since it is larger than the sum of its proper divisors (17807594).

30272818 is a wasteful number, since it uses less digits than its factorization.

30272818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890396.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 30272818 is about 5502.0739726034. The cubic root of 30272818 is about 311.6623085870.

The spelling of 30272818 in words is "thirty million, two hundred seventy-two thousand, eight hundred eighteen".