30863238 has 48 divisors (see below), whose sum is σ = 72517680. Its totient is φ = 8730624.

The previous prime is 30863233. The next prime is 30863243. The reversal of 30863238 is 83236803.

It is an interprime number because it is at equal distance from previous prime (30863233) and next prime (30863243).

It is a junction number, because it is equal to n+sod(n) for n = 30863199 and 30863208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30863233) 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, 32758 + ... + 33686.

It is an arithmetic number, because the mean of its divisors is an integer number (1510785).

Almost surely, 2^30863238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30863238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36258840).

30863238 is an abundant number, since it is smaller than the sum of its proper divisors (41654442).

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

30863238 is a wasteful number, since it uses less digits than its factorization.

30863238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 30863238 is about 5555.4691971066. The cubic root of 30863238 is about 313.6754256288.

It can be divided in two parts, 308 and 63238, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 30863238 in words is "thirty million, eight hundred sixty-three thousand, two hundred thirty-eight".