1304787630 has 32 divisors (see below), whose sum is σ = 3135283200. Its totient is φ = 347521952.

The previous prime is 1304787611. The next prime is 1304787637. The reversal of 1304787630 is 367874031.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304787637) 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, 750 + ... + 51089.

It is an arithmetic number, because the mean of its divisors is an integer number (97977600).

Almost surely, 2^1304787630 is an apocalyptic number.

1304787630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1304787630 is an abundant number, since it is smaller than the sum of its proper divisors (1830495570).

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

1304787630 is a wasteful number, since it uses less digits than its factorization.

1304787630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52688.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 1304787630 is about 36121.8442220217. The cubic root of 1304787630 is about 1092.7310327986.

The spelling of 1304787630 in words is "one billion, three hundred four million, seven hundred eighty-seven thousand, six hundred thirty".