30641328 has 140 divisors (see below), whose sum is σ = 92703888. Its totient is φ = 9797760.

The previous prime is 30641323. The next prime is 30641333. The reversal of 30641328 is 82314603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30641323) and next prime (30641333).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30641323) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 431533 + ... + 431603.

Almost surely, 2^30641328 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 30641328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46351944).

30641328 is an abundant number, since it is smaller than the sum of its proper divisors (62062560).

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

30641328 is an equidigital number, since it uses as much as digits as its factorization.

30641328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30641328 is about 5535.4609564155. The cubic root of 30641328 is about 312.9218299076.

The spelling of 30641328 in words is "thirty million, six hundred forty-one thousand, three hundred twenty-eight".