30680398 has 8 divisors (see below), whose sum is σ = 52594992. Its totient is φ = 13148736.

The previous prime is 30680357. The next prime is 30680399. The reversal of 30680398 is 89308603.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30680399) 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, 1095715 + ... + 1095742.

It is an arithmetic number, because the mean of its divisors is an integer number (6574374).

Almost surely, 2^30680398 is an apocalyptic number.

30680398 is a deficient number, since it is larger than the sum of its proper divisors (21914594).

30680398 is a wasteful number, since it uses less digits than its factorization.

30680398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191466.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30680398 is about 5538.9888969017. The cubic root of 30680398 is about 313.0547730498.

The spelling of 30680398 in words is "thirty million, six hundred eighty thousand, three hundred ninety-eight".