1285045248 has 88 divisors (see below), whose sum is σ = 3435815808. Its totient is φ = 427012096.

The previous prime is 1285045217. The next prime is 1285045253. The reversal of 1285045248 is 8425405821.

It is a happy number.

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, 1729165 + ... + 1729907.

Almost surely, 2^1285045248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285045248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717907904).

1285045248 is an abundant number, since it is smaller than the sum of its proper divisors (2150770560).

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

1285045248 is an equidigital number, since it uses as much as digits as its factorization.

1285045248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The square root of 1285045248 is about 35847.5277808666. The cubic root of 1285045248 is about 1087.1917295612.

The spelling of 1285045248 in words is "one billion, two hundred eighty-five million, forty-five thousand, two hundred forty-eight".