1304220996 has 81 divisors (see below), whose sum is σ = 3577613949. Its totient is φ = 400432032.

The previous prime is 1304220949. The next prime is 1304220997. The reversal of 1304220996 is 6990224031.

The square root of 1304220996 is 36114.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 192932100 + 1111288896 = 13890^2 + 33336^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1304220996.

It is not an unprimeable number, because it can be changed into a prime (1304220997) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2816661 + ... + 2817123.

Almost surely, 2^1304220996 is an apocalyptic number.

1304220996 is the 36114-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304220996

1304220996 is an abundant number, since it is smaller than the sum of its proper divisors (2273392953).

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

1304220996 is a wasteful number, since it uses less digits than its factorization.

1304220996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The cubic root of 1304220996 is about 1092.5728287113.

Multiplying 1304220996 by its sum of digits (36), we get a square (46951955856 = 216684²).

1304220996 divided by its sum of digits (36) gives a square (36228361 = 6019²).

The spelling of 1304220996 in words is "one billion, three hundred four million, two hundred twenty thousand, nine hundred ninety-six".