30868420 has 48 divisors (see below), whose sum is σ = 71180928. Its totient is φ = 11151360.

The previous prime is 30868417. The next prime is 30868423. The reversal of 30868420 is 2486803.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30868417) and next prime (30868423).

It is not an unprimeable number, because it can be changed into a prime (30868423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42097 + ... + 42823.

It is an arithmetic number, because the mean of its divisors is an integer number (1482936).

Almost surely, 2^30868420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30868420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35590464).

30868420 is an abundant number, since it is smaller than the sum of its proper divisors (40312508).

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

30868420 is a wasteful number, since it uses less digits than its factorization.

30868420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30868420 is about 5555.9355647811. The cubic root of 30868420 is about 313.6929802255.

The spelling of 30868420 in words is "thirty million, eight hundred sixty-eight thousand, four hundred twenty".