30155246 has 16 divisors (see below), whose sum is σ = 52248240. Its totient is φ = 12900480.

The previous prime is 30155239. The next prime is 30155249. The reversal of 30155246 is 64255103.

It is a super-2 number, since 2×30155246² = 1818677722641032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30155249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39941 + ... + 40688.

It is an arithmetic number, because the mean of its divisors is an integer number (3265515).

Almost surely, 2^30155246 is an apocalyptic number.

30155246 is a deficient number, since it is larger than the sum of its proper divisors (22092994).

30155246 is a wasteful number, since it uses less digits than its factorization.

30155246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80659.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30155246 is about 5491.3792438694. The cubic root of 30155246 is about 311.2583124934.

The spelling of 30155246 in words is "thirty million, one hundred fifty-five thousand, two hundred forty-six".