30798542 has 4 divisors (see below), whose sum is σ = 46197816. Its totient is φ = 15399270.

The previous prime is 30798517. The next prime is 30798553. The reversal of 30798542 is 24589703.

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

It is a junction number, because it is equal to n+sod(n) for n = 30798496 and 30798505.

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, 7699634 + ... + 7699637.

It is an arithmetic number, because the mean of its divisors is an integer number (11549454).

Almost surely, 2^30798542 is an apocalyptic number.

30798542 is a deficient number, since it is larger than the sum of its proper divisors (15399274).

30798542 is a wasteful number, since it uses less digits than its factorization.

30798542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15399273.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 30798542 is about 5549.6434119680. The cubic root of 30798542 is about 313.4560951991.

The spelling of 30798542 in words is "thirty million, seven hundred ninety-eight thousand, five hundred forty-two".