30426240 has 256 divisors, whose sum is σ = 111041280. Its totient is φ = 7028736.

The previous prime is 30426233. The next prime is 30426271. The reversal of 30426240 is 4262403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574054 + ... + 574106.

It is an arithmetic number, because the mean of its divisors is an integer number (433755).

Almost surely, 2^30426240 is an apocalyptic number.

30426240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55520640).

30426240 is an abundant number, since it is smaller than the sum of its proper divisors (80615040).

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

30426240 is a wasteful number, since it uses less digits than its factorization.

30426240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30426240 is about 5515.9985496735. The cubic root of 30426240 is about 312.1879209785.

Adding to 30426240 its reverse (4262403), we get a palindrome (34688643).

The spelling of 30426240 in words is "thirty million, four hundred twenty-six thousand, two hundred forty".