30085155 has 32 divisors (see below), whose sum is σ = 56635200. Its totient is φ = 15100416.

The previous prime is 30085147. The next prime is 30085163. The reversal of 30085155 is 55158003.

It is an interprime number because it is at equal distance from previous prime (30085147) and next prime (30085163).

It is not a de Polignac number, because 30085155 - 2³ = 30085147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4260 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (1769850).

Almost surely, 2^30085155 is an apocalyptic number.

30085155 is a deficient number, since it is larger than the sum of its proper divisors (26550045).

30085155 is a wasteful number, since it uses less digits than its factorization.

30085155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13140 (or 13134 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 30085155 is about 5484.9936189571. The cubic root of 30085155 is about 311.0169688463.

The spelling of 30085155 in words is "thirty million, eighty-five thousand, one hundred fifty-five".