30040434 has 12 divisors (see below), whose sum is σ = 65087646. Its totient is φ = 10013472.

The previous prime is 30040429. The next prime is 30040441. The reversal of 30040434 is 43404003.

It can be written as a sum of positive squares in only one way, i.e., 17614809 + 12425625 = 4197^2 + 3525^2 .

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: 1668913 = 30040434 / (3 + 0 + 0 + 4 + 0 + 4 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 834439 + ... + 834474.

Almost surely, 2^30040434 is an apocalyptic number.

30040434 is an abundant number, since it is smaller than the sum of its proper divisors (35047212).

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

30040434 is a wasteful number, since it uses less digits than its factorization.

30040434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668921 (or 1668918 counting only the distinct ones).

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

The square root of 30040434 is about 5480.9154344872. The cubic root of 30040434 is about 310.8627855248.

Adding to 30040434 its reverse (43404003), we get a palindrome (73444437).

The spelling of 30040434 in words is "thirty million, forty thousand, four hundred thirty-four".