30040016 has 10 divisors (see below), whose sum is σ = 58202562. Its totient is φ = 15020000.

The previous prime is 30040013. The next prime is 30040057. The reversal of 30040016 is 61004003.

It can be written as a sum of positive squares in only one way, i.e., 27081616 + 2958400 = 5204^2 + 1720^2 .

It is a super-2 number, since 2×30040016² = 1804805122560512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 938735 + ... + 938766.

Almost surely, 2^30040016 is an apocalyptic number.

It is an amenable number.

30040016 is a deficient number, since it is larger than the sum of its proper divisors (28162546).

30040016 is a wasteful number, since it uses less digits than its factorization.

30040016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877509 (or 1877503 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30040016 is about 5480.8773020384. The cubic root of 30040016 is about 310.8613436765.

Adding to 30040016 its reverse (61004003), we get a palindrome (91044019).

The spelling of 30040016 in words is "thirty million, forty thousand, sixteen".