1297524228 has 192 divisors, whose sum is σ = 4106403840. Its totient is φ = 307929600.

The previous prime is 1297524191. The next prime is 1297524247. The reversal of 1297524228 is 8224257921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1297524228.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1308813 + ... + 1309803.

It is an arithmetic number, because the mean of its divisors is an integer number (21387520).

Almost surely, 2^1297524228 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 1297524228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053201920).

1297524228 is an abundant number, since it is smaller than the sum of its proper divisors (2808879612).

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

1297524228 is a wasteful number, since it uses less digits than its factorization.

1297524228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1136 counting only the distinct ones).

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

The square root of 1297524228 is about 36021.1636125209. The cubic root of 1297524228 is about 1090.6996120229.

It can be divided in two parts, 1297 and 524228, that added together give a palindrome (525525).

The spelling of 1297524228 in words is "one billion, two hundred ninety-seven million, five hundred twenty-four thousand, two hundred twenty-eight".