30630836 has 6 divisors (see below), whose sum is σ = 53603970. Its totient is φ = 15315416.

The previous prime is 30630829. The next prime is 30630841. The reversal of 30630836 is 63803603.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 2540836 = 5300^2 + 1594^2 .

It is a super-2 number, since 2×30630836² = 1876496228117792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30630799 and 30630808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828851 + ... + 3828858.

It is an arithmetic number, because the mean of its divisors is an integer number (8933995).

Almost surely, 2^30630836 is an apocalyptic number.

It is an amenable number.

30630836 is a deficient number, since it is larger than the sum of its proper divisors (22973134).

30630836 is a wasteful number, since it uses less digits than its factorization.

30630836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657713 (or 7657711 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 30630836 is about 5534.5131673888. The cubic root of 30630836 is about 312.8861096255.

The spelling of 30630836 in words is "thirty million, six hundred thirty thousand, eight hundred thirty-six".