30797990 has 8 divisors (see below), whose sum is σ = 55436400. Its totient is φ = 12319192.

The previous prime is 30797959. The next prime is 30798013. The reversal of 30797990 is 9979703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539890 + ... + 1539909.

It is an arithmetic number, because the mean of its divisors is an integer number (6929550).

Almost surely, 2^30797990 is an apocalyptic number.

30797990 is a deficient number, since it is larger than the sum of its proper divisors (24638410).

30797990 is a wasteful number, since it uses less digits than its factorization.

30797990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079806.

The product of its (nonzero) digits is 107163, while the sum is 44.

The square root of 30797990 is about 5549.5936788201. The cubic root of 30797990 is about 313.4542225044.

The spelling of 30797990 in words is "thirty million, seven hundred ninety-seven thousand, nine hundred ninety".