1304155530 has 48 divisors (see below), whose sum is σ = 3462960384. Its totient is φ = 340374240.

The previous prime is 1304155519. The next prime is 1304155543. The reversal of 1304155530 is 355514031.

It is a junction number, because it is equal to n+sod(n) for n = 1304155494 and 1304155503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149926 + ... + 158385.

It is an arithmetic number, because the mean of its divisors is an integer number (72145008).

Almost surely, 2^1304155530 is an apocalyptic number.

1304155530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1304155530 is an abundant number, since it is smaller than the sum of its proper divisors (2158804854).

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

1304155530 is a wasteful number, since it uses less digits than its factorization.

1304155530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308371 (or 308368 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1304155530 is about 36113.0936088284. The cubic root of 1304155530 is about 1092.5545476659.

Adding to 1304155530 its reverse (355514031), we get a palindrome (1659669561).

The spelling of 1304155530 in words is "one billion, three hundred four million, one hundred fifty-five thousand, five hundred thirty".