1282973904 has 120 divisors (see below), whose sum is σ = 3771564160. Its totient is φ = 422143488.

The previous prime is 1282973903. The next prime is 1282973941. The reversal of 1282973904 is 4093792821.

It is a self number, because there is not a number n which added to its sum of digits gives 1282973904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282973903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305064 + ... + 309240.

Almost surely, 2^1282973904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282973904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1885782080).

1282973904 is an abundant number, since it is smaller than the sum of its proper divisors (2488590256).

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

1282973904 is an equidigital number, since it uses as much as digits as its factorization.

1282973904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4261 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1282973904 is about 35818.6250992413. The cubic root of 1282973904 is about 1086.6072730700.

The spelling of 1282973904 in words is "one billion, two hundred eighty-two million, nine hundred seventy-three thousand, nine hundred four".