30423680 has 64 divisors (see below), whose sum is σ = 83134080. Its totient is φ = 10429440.

The previous prime is 30423619. The next prime is 30423683. The reversal of 30423680 is 8632403.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (30423683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 7875.

It is an arithmetic number, because the mean of its divisors is an integer number (1298970).

Almost surely, 2^30423680 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 30423680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41567040).

30423680 is an abundant number, since it is smaller than the sum of its proper divisors (52710400).

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

30423680 is an equidigital number, since it uses as much as digits as its factorization.

30423680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6817 (or 6805 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 30423680 is about 5515.7664925194. The cubic root of 30423680 is about 312.1791651207.

The spelling of 30423680 in words is "thirty million, four hundred twenty-three thousand, six hundred eighty".