30773198 has 8 divisors (see below), whose sum is σ = 48589320. Its totient is φ = 14576760.

The previous prime is 30773191. The next prime is 30773269. The reversal of 30773198 is 89137703.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 809821 = 30773198 / (3 + 0 + 7 + 7 + 3 + 1 + 9 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30773191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404873 + ... + 404948.

It is an arithmetic number, because the mean of its divisors is an integer number (6073665).

Almost surely, 2^30773198 is an apocalyptic number.

30773198 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30773198 is a deficient number, since it is larger than the sum of its proper divisors (17816122).

30773198 is a wasteful number, since it uses less digits than its factorization.

30773198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809842.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 30773198 is about 5547.3595520752. The cubic root of 30773198 is about 313.3700910049.

The spelling of 30773198 in words is "thirty million, seven hundred seventy-three thousand, one hundred ninety-eight".