30213002440 has 32 divisors (see below), whose sum is σ = 67992239160. Its totient is φ = 12082892800.

The previous prime is 30213002419. The next prime is 30213002441. The reversal of 30213002440 is 4420031203.

It can be written as a sum of positive squares in 4 ways, for example, as 21561398244 + 8651604196 = 146838^2 + 93014^2 .

It is not an unprimeable number, because it can be changed into a prime (30213002441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148230 + ... + 287050.

Almost surely, 2^30213002440 is an apocalyptic number.

It is an amenable number.

30213002440 is an abundant number, since it is smaller than the sum of its proper divisors (37779236720).

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

30213002440 is a wasteful number, since it uses less digits than its factorization.

30213002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144273 (or 144269 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30213002440 its reverse (4420031203), we get a palindrome (34633033643).

The spelling of 30213002440 in words is "thirty billion, two hundred thirteen million, two thousand, four hundred forty".