30818072 has 16 divisors (see below), whose sum is σ = 58109400. Its totient is φ = 15322240.

The previous prime is 30818071. The next prime is 30818083. The reversal of 30818072 is 27081803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30818071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9329 + ... + 12192.

Almost surely, 2^30818072 is an apocalyptic number.

It is an amenable number.

30818072 is a deficient number, since it is larger than the sum of its proper divisors (27291328).

30818072 is a wasteful number, since it uses less digits than its factorization.

30818072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21706 (or 21702 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 30818072 is about 5551.4027056231. The cubic root of 30818072 is about 313.5223375557.

Adding to 30818072 its reverse (27081803), we get a palindrome (57899875).

The spelling of 30818072 in words is "thirty million, eight hundred eighteen thousand, seventy-two".