1304877644 has 48 divisors (see below), whose sum is σ = 2728084800. Its totient is φ = 545569920.

The previous prime is 1304877643. The next prime is 1304877661. The reversal of 1304877644 is 4467784031.

It is a junction number, because it is equal to n+sod(n) for n = 1304877595 and 1304877604.

It is not an unprimeable number, because it can be changed into a prime (1304877641) 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, 44654 + ... + 67850.

It is an arithmetic number, because the mean of its divisors is an integer number (56835100).

Almost surely, 2^1304877644 is an apocalyptic number.

1304877644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304877644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364042400).

1304877644 is an abundant number, since it is smaller than the sum of its proper divisors (1423207156).

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

1304877644 is a wasteful number, since it uses less digits than its factorization.

1304877644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23263 (or 23247 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 1304877644 is about 36123.0901778904. The cubic root of 1304877644 is about 1092.7561604713.

The spelling of 1304877644 in words is "one billion, three hundred four million, eight hundred seventy-seven thousand, six hundred forty-four".