30522240 has 192 divisors, whose sum is σ = 120612960. Its totient is φ = 6967296.

The previous prime is 30522229. The next prime is 30522251. The reversal of 30522240 is 4222503.

It is an interprime number because it is at equal distance from previous prime (30522229) and next prime (30522251).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39942 + ... + 40698.

Almost surely, 2^30522240 is an apocalyptic number.

30522240 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 30522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60306480).

30522240 is an abundant number, since it is smaller than the sum of its proper divisors (90090720).

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

30522240 is a wasteful number, since it uses less digits than its factorization.

30522240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30522240 is about 5524.6936566655. The cubic root of 30522240 is about 312.5159117231.

Adding to 30522240 its reverse (4222503), we get a palindrome (34744743).

The spelling of 30522240 in words is "thirty million, five hundred twenty-two thousand, two hundred forty".