30960930 has 128 divisors (see below), whose sum is σ = 99864576. Its totient is φ = 5932800.

The previous prime is 30960929. The next prime is 30960931. The reversal of 30960930 is 3906903.

It is an interprime number because it is at equal distance from previous prime (30960929) and next prime (30960931).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (30960931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29515 + ... + 30545.

It is an arithmetic number, because the mean of its divisors is an integer number (780192).

Almost surely, 2^30960930 is an apocalyptic number.

30960930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30960930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49932288).

30960930 is an abundant number, since it is smaller than the sum of its proper divisors (68903646).

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

30960930 is a wasteful number, since it uses less digits than its factorization.

30960930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 30960930 is about 5564.2546670691. The cubic root of 30960930 is about 314.0060379923.

The spelling of 30960930 in words is "thirty million, nine hundred sixty thousand, nine hundred thirty".