30641392 has 40 divisors (see below), whose sum is σ = 61821440. Its totient is φ = 14696640.

The previous prime is 30641381. The next prime is 30641407. The reversal of 30641392 is 29314603.

It is a self number, because there is not a number n which added to its sum of digits gives 30641392.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80659 + ... + 81037.

It is an arithmetic number, because the mean of its divisors is an integer number (1545536).

Almost surely, 2^30641392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30641392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30910720).

30641392 is an abundant number, since it is smaller than the sum of its proper divisors (31180048).

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

30641392 is a wasteful number, since it uses less digits than its factorization.

30641392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30641392 is about 5535.4667373222. The cubic root of 30641392 is about 312.9220477722.

Adding to 30641392 its reverse (29314603), we get a palindrome (59955995).

The spelling of 30641392 in words is "thirty million, six hundred forty-one thousand, three hundred ninety-two".