1304265240 has 80 divisors (see below), whose sum is σ = 4383791280. Its totient is φ = 347803200.

The previous prime is 1304265239. The next prime is 1304265253. The reversal of 1304265240 is 425624031.

1304265240 is a `hidden beast` number, since 1 + 3 + 0 + 4 + 2 + 652 + 4 + 0 = 666.

It is a super-2 number, since 2×1304265240² = 3402215632544515200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198036 + ... + 204515.

It is an arithmetic number, because the mean of its divisors is an integer number (54797391).

Almost surely, 2^1304265240 is an apocalyptic number.

1304265240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304265240 is an abundant number, since it is smaller than the sum of its proper divisors (3079526040).

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

1304265240 is a wasteful number, since it uses less digits than its factorization.

1304265240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402574 (or 402561 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1304265240 is about 36114.6125550310. The cubic root of 1304265240 is about 1092.5851832754.

Adding to 1304265240 its reverse (425624031), we get a palindrome (1729889271).

The spelling of 1304265240 in words is "one billion, three hundred four million, two hundred sixty-five thousand, two hundred forty".