1285716264 has 64 divisors (see below), whose sum is σ = 3709895040. Its totient is φ = 363705600.

The previous prime is 1285716251. The next prime is 1285716269. The reversal of 1285716264 is 4626175821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1285716269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20919 + ... + 54854.

It is an arithmetic number, because the mean of its divisors is an integer number (57967110).

Almost surely, 2^1285716264 is an apocalyptic number.

1285716264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1285716264 is an abundant number, since it is smaller than the sum of its proper divisors (2424178776).

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

1285716264 is a wasteful number, since it uses less digits than its factorization.

1285716264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75890 (or 75886 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1285716264 is about 35856.8858658975. The cubic root of 1285716264 is about 1087.3809307079.

The spelling of 1285716264 in words is "one billion, two hundred eighty-five million, seven hundred sixteen thousand, two hundred sixty-four".