1012253436 has 72 divisors (see below), whose sum is σ = 2660112000. Its totient is φ = 336580272.

The previous prime is 1012253399. The next prime is 1012253441. The reversal of 1012253436 is 6343522101.

1012253436 is a `hidden beast` number, since 1 + 0 + 1 + 225 + 3 + 436 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483985 + ... + 486071.

It is an arithmetic number, because the mean of its divisors is an integer number (36946000).

Almost surely, 2^1012253436 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 1012253436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330056000).

1012253436 is an abundant number, since it is smaller than the sum of its proper divisors (1647858564).

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

1012253436 is a wasteful number, since it uses less digits than its factorization.

1012253436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605 (or 2591 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1012253436 is about 31815.9305380182. The cubic root of 1012253436 is about 1004.0679083499.

Adding to 1012253436 its reverse (6343522101), we get a palindrome (7355775537).

The spelling of 1012253436 in words is "one billion, twelve million, two hundred fifty-three thousand, four hundred thirty-six".