30685434 has 16 divisors (see below), whose sum is σ = 66091872. Its totient is φ = 9441648.

The previous prime is 30685429. The next prime is 30685441. The reversal of 30685434 is 43458603.

It is a junction number, because it is equal to n+sod(n) for n = 30685395 and 30685404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196624 + ... + 196779.

It is an arithmetic number, because the mean of its divisors is an integer number (4130742).

Almost surely, 2^30685434 is an apocalyptic number.

30685434 is an abundant number, since it is smaller than the sum of its proper divisors (35406438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30685434 is a wasteful number, since it uses less digits than its factorization.

30685434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393421.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 30685434 is about 5539.4434738519. The cubic root of 30685434 is about 313.0719007892.

The spelling of 30685434 in words is "thirty million, six hundred eighty-five thousand, four hundred thirty-four".