30401240 has 32 divisors (see below), whose sum is σ = 69234480. Its totient is φ = 12012672.

The previous prime is 30401227. The next prime is 30401249. The reversal of 30401240 is 4210403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30401249) 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, 1259 + ... + 7898.

Almost surely, 2^30401240 is an apocalyptic number.

It is an amenable number.

30401240 is an abundant number, since it is smaller than the sum of its proper divisors (38833240).

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

30401240 is a wasteful number, since it uses less digits than its factorization.

30401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9251 (or 9247 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 30401240 is about 5513.7319485082. The cubic root of 30401240 is about 312.1023935236.

Adding to 30401240 its reverse (4210403), we get a palindrome (34611643).

The spelling of 30401240 in words is "thirty million, four hundred one thousand, two hundred forty".