30494790 has 48 divisors (see below), whose sum is σ = 80308800. Its totient is φ = 8027136.

The previous prime is 30494773. The next prime is 30494797. The reversal of 30494790 is 9749403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30494797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4966 + ... + 9254.

It is an arithmetic number, because the mean of its divisors is an integer number (1673100).

Almost surely, 2^30494790 is an apocalyptic number.

30494790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30494790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40154400).

30494790 is an abundant number, since it is smaller than the sum of its proper divisors (49814010).

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

30494790 is a wasteful number, since it uses less digits than its factorization.

30494790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30494790 is about 5522.2087972115. The cubic root of 30494790 is about 312.4221971644.

The spelling of 30494790 in words is "thirty million, four hundred ninety-four thousand, seven hundred ninety".