1285323200 has 84 divisors (see below), whose sum is σ = 3614543952. Its totient is φ = 440678400.

The previous prime is 1285323197. The next prime is 1285323203. The reversal of 1285323200 is 23235821.

It is an interprime number because it is at equal distance from previous prime (1285323197) and next prime (1285323203).

It is a self number, because there is not a number n which added to its sum of digits gives 1285323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285323203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46181 + ... + 68580.

Almost surely, 2^1285323200 is an apocalyptic number.

1285323200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285323200 is an abundant number, since it is smaller than the sum of its proper divisors (2329220752).

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

1285323200 is a wasteful number, since it uses less digits than its factorization.

1285323200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114790 (or 114775 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1285323200 is about 35851.4044355308. The cubic root of 1285323200 is about 1087.2701095071.

The spelling of 1285323200 in words is "one billion, two hundred eighty-five million, three hundred twenty-three thousand, two hundred".