30786998 has 12 divisors (see below), whose sum is σ = 50760780. Its totient is φ = 13993980.

The previous prime is 30786979. The next prime is 30787007. The reversal of 30786998 is 89968703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63368 + ... + 63851.

It is an arithmetic number, because the mean of its divisors is an integer number (4230065).

Almost surely, 2^30786998 is an apocalyptic number.

30786998 is a deficient number, since it is larger than the sum of its proper divisors (19973782).

30786998 is a wasteful number, since it uses less digits than its factorization.

30786998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127243 (or 127232 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 30786998 is about 5548.6032476651. The cubic root of 30786998 is about 313.4169267934.

The spelling of 30786998 in words is "thirty million, seven hundred eighty-six thousand, nine hundred ninety-eight".