30487085 has 4 divisors (see below), whose sum is σ = 36584508. Its totient is φ = 24389664.

The previous prime is 30487081. The next prime is 30487099. The reversal of 30487085 is 58078403.

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 13734436 + 16752649 = 3706^2 + 4093^2 .

It is a cyclic number.

It is not a de Polignac number, because 30487085 - 2² = 30487081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30487081) 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, 3048704 + ... + 3048713.

It is an arithmetic number, because the mean of its divisors is an integer number (9146127).

Almost surely, 2^30487085 is an apocalyptic number.

It is an amenable number.

30487085 is a deficient number, since it is larger than the sum of its proper divisors (6097423).

30487085 is an equidigital number, since it uses as much as digits as its factorization.

30487085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097422.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 30487085 is about 5521.5111156277. The cubic root of 30487085 is about 312.3958821141.

The spelling of 30487085 in words is "thirty million, four hundred eighty-seven thousand, eighty-five".