1304503530 has 128 divisors (see below), whose sum is σ = 3499324416. Its totient is φ = 308582400.

The previous prime is 1304503481. The next prime is 1304503547. The reversal of 1304503530 is 353054031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304503530.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2656585 + ... + 2657075.

It is an arithmetic number, because the mean of its divisors is an integer number (27338472).

Almost surely, 2^1304503530 is an apocalyptic number.

1304503530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304503530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749662208).

1304503530 is an abundant number, since it is smaller than the sum of its proper divisors (2194820886).

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

1304503530 is a wasteful number, since it uses less digits than its factorization.

1304503530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 1304503530 is about 36117.9114844699. The cubic root of 1304503530 is about 1092.6517178681.

Adding to 1304503530 its reverse (353054031), we get a palindrome (1657557561).

The spelling of 1304503530 in words is "one billion, three hundred four million, five hundred three thousand, five hundred thirty".