1283956172 has 24 divisors (see below), whose sum is σ = 2270080176. Its totient is φ = 635378688.

The previous prime is 1283956169. The next prime is 1283956211. The reversal of 1283956172 is 2716593821.

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, 397508 + ... + 400724.

It is an arithmetic number, because the mean of its divisors is an integer number (94586674).

Almost surely, 2^1283956172 is an apocalyptic number.

It is an amenable number.

1283956172 is a deficient number, since it is larger than the sum of its proper divisors (986124004).

1283956172 is a wasteful number, since it uses less digits than its factorization.

1283956172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217 (or 4215 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 1283956172 is about 35832.3341690156. The cubic root of 1283956172 is about 1086.8845110491.

The spelling of 1283956172 in words is "one billion, two hundred eighty-three million, nine hundred fifty-six thousand, one hundred seventy-two".