30372085 has 4 divisors (see below), whose sum is σ = 36446508. Its totient is φ = 24297664.

The previous prime is 30372071. The next prime is 30372091. The reversal of 30372085 is 58027303.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5948721 + 24423364 = 2439^2 + 4942^2 .

It is a cyclic number.

It is not a de Polignac number, because 30372085 - 2¹⁵ = 30339317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037204 + ... + 3037213.

It is an arithmetic number, because the mean of its divisors is an integer number (9111627).

Almost surely, 2^30372085 is an apocalyptic number.

It is an amenable number.

30372085 is a deficient number, since it is larger than the sum of its proper divisors (6074423).

30372085 is an equidigital number, since it uses as much as digits as its factorization.

30372085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6074422.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30372085 is about 5511.0874607467. The cubic root of 30372085 is about 312.0025921601.

Adding to 30372085 its reverse (58027303), we get a palindrome (88399388).

The spelling of 30372085 in words is "thirty million, three hundred seventy-two thousand, eighty-five".