30243402 has 64 divisors (see below), whose sum is σ = 80870400. Its totient is φ = 8184240.

The previous prime is 30243397. The next prime is 30243403. The reversal of 30243402 is 20434203.

It is a Harshad number since it is a multiple of its sum of digits (18).

30243402 is a modest number, since divided by 3402 gives 3024 as remainder.

It is not an unprimeable number, because it can be changed into a prime (30243403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5077 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (1263600).

Almost surely, 2^30243402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30243402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40435200).

30243402 is an abundant number, since it is smaller than the sum of its proper divisors (50626998).

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

30243402 is a wasteful number, since it uses less digits than its factorization.

30243402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248 (or 4242 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 30243402 is about 5499.4001491072. The cubic root of 30243402 is about 311.5613287847.

Adding to 30243402 its reverse (20434203), we get a palindrome (50677605).

The spelling of 30243402 in words is "thirty million, two hundred forty-three thousand, four hundred two".