304928540 has 48 divisors (see below), whose sum is σ = 736542912. Its totient is φ = 103873536.

The previous prime is 304928537. The next prime is 304928543. The reversal of 304928540 is 45829403.

It is an interprime number because it is at equal distance from previous prime (304928537) and next prime (304928543).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 304928540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304928543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15044 + ... + 28916.

It is an arithmetic number, because the mean of its divisors is an integer number (15344644).

Almost surely, 2^304928540 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 304928540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368271456).

304928540 is an abundant number, since it is smaller than the sum of its proper divisors (431614372).

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

304928540 is a wasteful number, since it uses less digits than its factorization.

304928540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14046 (or 14044 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 304928540 is about 17462.2031828747. The cubic root of 304928540 is about 673.0789751498.

The spelling of 304928540 in words is "three hundred four million, nine hundred twenty-eight thousand, five hundred forty".