30858490 has 16 divisors (see below), whose sum is σ = 59818248. Its totient is φ = 11393856.

The previous prime is 30858473. The next prime is 30858493. The reversal of 30858490 is 9485803.

It can be written as a sum of positive squares in 4 ways, for example, as 7789681 + 23068809 = 2791^2 + 4803^2 .

It is not an unprimeable number, because it can be changed into a prime (30858493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118557 + ... + 118816.

Almost surely, 2^30858490 is an apocalyptic number.

30858490 is a deficient number, since it is larger than the sum of its proper divisors (28959758).

30858490 is a wasteful number, since it uses less digits than its factorization.

30858490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237393.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 30858490 is about 5555.0418540277. The cubic root of 30858490 is about 313.6593395298.

The spelling of 30858490 in words is "thirty million, eight hundred fifty-eight thousand, four hundred ninety".