30085405 has 16 divisors (see below), whose sum is σ = 42140160. Its totient is φ = 20189952.

The previous prime is 30085387. The next prime is 30085409. The reversal of 30085405 is 50458003.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30085405 - 2⁹ = 30084893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30085405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30085409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7500 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (2633760).

Almost surely, 2^30085405 is an apocalyptic number.

30085405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30085405 is a deficient number, since it is larger than the sum of its proper divisors (12054755).

30085405 is a wasteful number, since it uses less digits than its factorization.

30085405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18348.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 30085405 is about 5485.0164083620. The cubic root of 30085405 is about 311.0178303346.

The spelling of 30085405 in words is "thirty million, eighty-five thousand, four hundred five".