30516145 has 8 divisors (see below), whose sum is σ = 39948480. Its totient is φ = 22193520.

The previous prime is 30516133. The next prime is 30516151. The reversal of 30516145 is 54161503.

30516145 = T₂₃₅₀ + T₂₃₅₁ + ... + T₂₃₆₀.

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

It is not a de Polignac number, because 30516145 - 2¹¹ = 30514097 is a prime.

It is a super-2 number, since 2×30516145² = 1862470211322050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277365 + ... + 277474.

It is an arithmetic number, because the mean of its divisors is an integer number (4993560).

Almost surely, 2^30516145 is an apocalyptic number.

It is an amenable number.

30516145 is a deficient number, since it is larger than the sum of its proper divisors (9432335).

30516145 is a wasteful number, since it uses less digits than its factorization.

30516145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554855.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 30516145 is about 5524.1420148291. The cubic root of 30516145 is about 312.4951081901.

Adding to 30516145 its reverse (54161503), we get a palindrome (84677648).

The spelling of 30516145 in words is "thirty million, five hundred sixteen thousand, one hundred forty-five".