30709085 has 16 divisors (see below), whose sum is σ = 40364352. Its totient is φ = 22243200.

The previous prime is 30709067. The next prime is 30709093. The reversal of 30709085 is 58090703.

It is not a de Polignac number, because 30709085 - 2⁸ = 30708829 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 15 ways as a sum of consecutive naturals, for example, 14462 + ... + 16448.

It is an arithmetic number, because the mean of its divisors is an integer number (2522772).

Almost surely, 2^30709085 is an apocalyptic number.

It is an amenable number.

30709085 is a deficient number, since it is larger than the sum of its proper divisors (9655267).

30709085 is a wasteful number, since it uses less digits than its factorization.

30709085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 30709085 is about 5541.5778438997. The cubic root of 30709085 is about 313.1523142083.

Adding to 30709085 its reverse (58090703), we get a palindrome (88799788).

The spelling of 30709085 in words is "thirty million, seven hundred nine thousand, eighty-five".