1285952064 has 28 divisors (see below), whose sum is σ = 3402415344. Its totient is φ = 428650624.

The previous prime is 1285952051. The next prime is 1285952069. The reversal of 1285952064 is 4602595821.

It is not an unprimeable number, because it can be changed into a prime (1285952069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3348642 + ... + 3349025.

Almost surely, 2^1285952064 is an apocalyptic number.

It is an amenable number.

1285952064 is an abundant number, since it is smaller than the sum of its proper divisors (2116463280).

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

1285952064 is an equidigital number, since it uses as much as digits as its factorization.

1285952064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6697682 (or 6697672 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1285952064 is about 35860.1737865281. The cubic root of 1285952064 is about 1087.4474017631.

The spelling of 1285952064 in words is "one billion, two hundred eighty-five million, nine hundred fifty-two thousand, sixty-four".