30023442 has 12 divisors (see below), whose sum is σ = 65050830. Its totient is φ = 10007808.

The previous prime is 30023431. The next prime is 30023443. The reversal of 30023442 is 24432003.

It can be written as a sum of positive squares in only one way, i.e., 17214201 + 12809241 = 4149^2 + 3579^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1667969 = 30023442 / (3 + 0 + 0 + 2 + 3 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (30023443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 833967 + ... + 834002.

Almost surely, 2^30023442 is an apocalyptic number.

30023442 is an abundant number, since it is smaller than the sum of its proper divisors (35027388).

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

30023442 is a wasteful number, since it uses less digits than its factorization.

30023442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667977 (or 1667974 counting only the distinct ones).

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

The square root of 30023442 is about 5479.3651092075. The cubic root of 30023442 is about 310.8041625735.

Adding to 30023442 its reverse (24432003), we get a palindrome (54455445).

The spelling of 30023442 in words is "thirty million, twenty-three thousand, four hundred forty-two".