30858492 has 48 divisors (see below), whose sum is σ = 83043072. Its totient is φ = 8736000.

The previous prime is 30858473. The next prime is 30858493. The reversal of 30858492 is 29485803.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30858492.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7867 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1730064).

Almost surely, 2^30858492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30858492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41521536).

30858492 is an abundant number, since it is smaller than the sum of its proper divisors (52184580).

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

30858492 is a wasteful number, since it uses less digits than its factorization.

30858492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378 (or 3376 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 30858492 is about 5555.0420340444. The cubic root of 30858492 is about 313.6593463061.

The spelling of 30858492 in words is "thirty million, eight hundred fifty-eight thousand, four hundred ninety-two".