1284004320 has 48 divisors (see below), whose sum is σ = 4044615120. Its totient is φ = 342401024.

The previous prime is 1284004313. The next prime is 1284004349. The reversal of 1284004320 is 234004821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337025 + ... + 1337984.

It is an arithmetic number, because the mean of its divisors is an integer number (84262815).

Almost surely, 2^1284004320 is an apocalyptic number.

1284004320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284004320 is an abundant number, since it is smaller than the sum of its proper divisors (2760610800).

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

1284004320 is a wasteful number, since it uses less digits than its factorization.

1284004320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675027 (or 2675019 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1284004320 is about 35833.0060140089. The cubic root of 1284004320 is about 1086.8980968351.

The spelling of 1284004320 in words is "one billion, two hundred eighty-four million, four thousand, three hundred twenty".