30423816 has 64 divisors (see below), whose sum is σ = 85579200. Its totient is φ = 10013184.

The previous prime is 30423793. The next prime is 30423823. The reversal of 30423816 is 61832403.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 30423816.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17080 + ... + 18776.

It is an arithmetic number, because the mean of its divisors is an integer number (1337175).

Almost surely, 2^30423816 is an apocalyptic number.

30423816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30423816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42789600).

30423816 is an abundant number, since it is smaller than the sum of its proper divisors (55155384).

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

30423816 is a wasteful number, since it uses less digits than its factorization.

30423816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30423816 is about 5515.7788208013. The cubic root of 30423816 is about 312.1796302880.

The spelling of 30423816 in words is "thirty million, four hundred twenty-three thousand, eight hundred sixteen".