30840446 has 32 divisors (see below), whose sum is σ = 58339008. Its totient is φ = 11900160.

The previous prime is 30840389. The next prime is 30840449. The reversal of 30840446 is 64404803.

It is a super-2 number, since 2×30840446² = 1902266218957832, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30840449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5396 + ... + 9528.

It is an arithmetic number, because the mean of its divisors is an integer number (1823094).

Almost surely, 2^30840446 is an apocalyptic number.

30840446 is a deficient number, since it is larger than the sum of its proper divisors (27498562).

30840446 is a wasteful number, since it uses less digits than its factorization.

30840446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 30840446 is about 5553.4175063649. The cubic root of 30840446 is about 313.5981918779.

The spelling of 30840446 in words is "thirty million, eight hundred forty thousand, four hundred forty-six".