1297538424 has 288 divisors, whose sum is σ = 4637178000. Its totient is φ = 323979264.

The previous prime is 1297538401. The next prime is 1297538441. The reversal of 1297538424 is 4248357921.

1297538424 is a `hidden beast` number, since 1 + 2 + 97 + 538 + 4 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1297538424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 870672 + ... + 872160.

Almost surely, 2^1297538424 is an apocalyptic number.

1297538424 is a gapful number since it is divisible by the number (14) 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 1297538424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2318589000).

1297538424 is an abundant number, since it is smaller than the sum of its proper divisors (3339639576).

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

1297538424 is a wasteful number, since it uses less digits than its factorization.

1297538424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1533 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1297538424 is about 36021.3606628067. The cubic root of 1297538424 is about 1090.7035897303.

The spelling of 1297538424 in words is "one billion, two hundred ninety-seven million, five hundred thirty-eight thousand, four hundred twenty-four".