30782642 has 24 divisors (see below), whose sum is σ = 51193296. Its totient is φ = 13871000.

The previous prime is 30782639. The next prime is 30782651. The reversal of 30782642 is 24628703.

It is a junction number, because it is equal to n+sod(n) for n = 30782599 and 30782608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31217 + ... + 32187.

It is an arithmetic number, because the mean of its divisors is an integer number (2133054).

Almost surely, 2^30782642 is an apocalyptic number.

30782642 is a deficient number, since it is larger than the sum of its proper divisors (20410654).

30782642 is a wasteful number, since it uses less digits than its factorization.

30782642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 30782642 is about 5548.2107025599. The cubic root of 30782642 is about 313.4021444869.

The spelling of 30782642 in words is "thirty million, seven hundred eighty-two thousand, six hundred forty-two".