1245632256 has 360 divisors, whose sum is σ = 4178786304. Its totient is φ = 365783040.

The previous prime is 1245632231. The next prime is 1245632281. The reversal of 1245632256 is 6522365421.

1245632256 is a `hidden beast` number, since 1 + 24 + 563 + 22 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (1245632231) and next prime (1245632281).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1245632256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9808065 + ... + 9808191.

Almost surely, 2^1245632256 is an apocalyptic number.

1245632256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245632256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089393152).

1245632256 is an abundant number, since it is smaller than the sum of its proper divisors (2933154048).

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

1245632256 is a wasteful number, since it uses less digits than its factorization.

1245632256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 186 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1245632256 is about 35293.5157783976. The cubic root of 1245632256 is about 1075.9612115940.

Adding to 1245632256 its reverse (6522365421), we get a palindrome (7767997677).

The spelling of 1245632256 in words is "one billion, two hundred forty-five million, six hundred thirty-two thousand, two hundred fifty-six".