30828458 has 4 divisors (see below), whose sum is σ = 46242690. Its totient is φ = 15414228.

The previous prime is 30828451. The next prime is 30828461. The reversal of 30828458 is 85482803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30614089 + 214369 = 5533^2 + 463^2 .

It is not an unprimeable number, because it can be changed into a prime (30828451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7707113 + ... + 7707116.

Almost surely, 2^30828458 is an apocalyptic number.

30828458 is a deficient number, since it is larger than the sum of its proper divisors (15414232).

30828458 is a wasteful number, since it uses less digits than its factorization.

30828458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15414231.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 30828458 is about 5552.3380660763. The cubic root of 30828458 is about 313.5575536596.

The spelling of 30828458 in words is "thirty million, eight hundred twenty-eight thousand, four hundred fifty-eight".