30049798 has 4 divisors (see below), whose sum is σ = 45074700. Its totient is φ = 15024898.

The previous prime is 30049739. The next prime is 30049807. The reversal of 30049798 is 89794003.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 30049798.

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, 7512448 + ... + 7512451.

It is an arithmetic number, because the mean of its divisors is an integer number (11268675).

Almost surely, 2^30049798 is an apocalyptic number.

30049798 is a deficient number, since it is larger than the sum of its proper divisors (15024902).

30049798 is a wasteful number, since it uses less digits than its factorization.

30049798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15024901.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30049798 is about 5481.7696047900. The cubic root of 30049798 is about 310.8950821811.

The spelling of 30049798 in words is "thirty million, forty-nine thousand, seven hundred ninety-eight".