30315390 has 64 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 6888960.

The previous prime is 30315379. The next prime is 30315409. The reversal of 30315390 is 9351303.

It is a self number, because there is not a number n which added to its sum of digits gives 30315390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50311 + ... + 50909.

It is an arithmetic number, because the mean of its divisors is an integer number (1306800).

Almost surely, 2^30315390 is an apocalyptic number.

30315390 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 30315390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41817600).

30315390 is an abundant number, since it is smaller than the sum of its proper divisors (53319810).

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

30315390 is a wasteful number, since it uses less digits than its factorization.

30315390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 30315390 is about 5505.9413364111. The cubic root of 30315390 is about 311.8083347803.

Adding to 30315390 its reverse (9351303), we get a palindrome (39666693).

The spelling of 30315390 in words is "thirty million, three hundred fifteen thousand, three hundred ninety".