30640030 has 32 divisors (see below), whose sum is σ = 56376000. Its totient is φ = 11987712.

The previous prime is 30640019. The next prime is 30640087. The reversal of 30640030 is 3004603.

It is a happy number.

It is a super-2 number, since 2×30640030² = 1877622876801800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30639986 and 30640013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153871 + ... + 154069.

It is an arithmetic number, because the mean of its divisors is an integer number (1761750).

Almost surely, 2^30640030 is an apocalyptic number.

30640030 is a deficient number, since it is larger than the sum of its proper divisors (25735970).

30640030 is a wasteful number, since it uses less digits than its factorization.

30640030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30640030 is about 5535.3437110987. The cubic root of 30640030 is about 312.9174112755.

Adding to 30640030 its reverse (3004603), we get a palindrome (33644633).

The spelling of 30640030 in words is "thirty million, six hundred forty thousand, thirty".