30122256 has 20 divisors (see below), whose sum is σ = 77815952. Its totient is φ = 10040736.

The previous prime is 30122243. The next prime is 30122269. The reversal of 30122256 is 65222103.

It is an interprime number because it is at equal distance from previous prime (30122243) and next prime (30122269).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313726 + ... + 313821.

Almost surely, 2^30122256 is an apocalyptic number.

It is an amenable number.

30122256 is an abundant number, since it is smaller than the sum of its proper divisors (47693696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30122256 is a wasteful number, since it uses less digits than its factorization.

30122256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627558 (or 627552 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30122256 is about 5488.3746227822. The cubic root of 30122256 is about 311.1447649913.

Adding to 30122256 its reverse (65222103), we get a palindrome (95344359).

The spelling of 30122256 in words is "thirty million, one hundred twenty-two thousand, two hundred fifty-six".