30423760 has 40 divisors (see below), whose sum is σ = 71546760. Its totient is φ = 12029952.

The previous prime is 30423737. The next prime is 30423773. The reversal of 30423760 is 6732403.

It can be written as a sum of positive squares in 4 ways, for example, as 41616 + 30382144 = 204^2 + 5512^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4984 + ... + 9256.

It is an arithmetic number, because the mean of its divisors is an integer number (1788669).

Almost surely, 2^30423760 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 30423760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35773380).

30423760 is an abundant number, since it is smaller than the sum of its proper divisors (41123000).

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

30423760 is a wasteful number, since it uses less digits than its factorization.

30423760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375 (or 4369 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 30423760 is about 5515.7737444533. The cubic root of 30423760 is about 312.1794387487.

The spelling of 30423760 in words is "thirty million, four hundred twenty-three thousand, seven hundred sixty".