1281924960 has 48 divisors (see below), whose sum is σ = 4038065136. Its totient is φ = 341846528.

The previous prime is 1281924947. The next prime is 1281924971. The reversal of 1281924960 is 694291821.

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

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, 1334859 + ... + 1335818.

It is an arithmetic number, because the mean of its divisors is an integer number (84126357).

Almost surely, 2^1281924960 is an apocalyptic number.

1281924960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281924960 is an abundant number, since it is smaller than the sum of its proper divisors (2756140176).

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

1281924960 is a wasteful number, since it uses less digits than its factorization.

1281924960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670695 (or 2670687 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1281924960 is about 35803.9796670705. The cubic root of 1281924960 is about 1086.3110599921.

The spelling of 1281924960 in words is "one billion, two hundred eighty-one million, nine hundred twenty-four thousand, nine hundred sixty".