30855285 has 24 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 16323552.

The previous prime is 30855283. The next prime is 30855287. The reversal of 30855285 is 58255803.

It is an interprime number because it is at equal distance from previous prime (30855283) and next prime (30855287).

It is not a de Polignac number, because 30855285 - 2¹ = 30855283 is a prime.

It is a super-2 number, since 2×30855285² = 1904097224862450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3016 + ... + 8414.

It is an arithmetic number, because the mean of its divisors is an integer number (2246400).

Almost surely, 2^30855285 is an apocalyptic number.

It is an amenable number.

30855285 is a deficient number, since it is larger than the sum of its proper divisors (23058315).

30855285 is a wasteful number, since it uses less digits than its factorization.

30855285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5534 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 30855285 is about 5554.7533698626. The cubic root of 30855285 is about 313.6484801414.

The spelling of 30855285 in words is "thirty million, eight hundred fifty-five thousand, two hundred eighty-five".