30240390 has 16 divisors (see below), whose sum is σ = 72577008. Its totient is φ = 8064096.

The previous prime is 30240389. The next prime is 30240401. The reversal of 30240390 is 9304203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503977 + ... + 504036.

It is an arithmetic number, because the mean of its divisors is an integer number (4536063).

Almost surely, 2^30240390 is an apocalyptic number.

30240390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30240390 is an abundant number, since it is smaller than the sum of its proper divisors (42336618).

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

30240390 is a wasteful number, since it uses less digits than its factorization.

30240390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008023.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30240390 is about 5499.1262942398. The cubic root of 30240390 is about 311.5509854391.

Adding to 30240390 its reverse (9304203), we get a palindrome (39544593).

The spelling of 30240390 in words is "thirty million, two hundred forty thousand, three hundred ninety".