1297822032 has 120 divisors (see below), whose sum is σ = 3965490984. Its totient is φ = 393818112.

The previous prime is 1297822003. The next prime is 1297822039. The reversal of 1297822032 is 2302287921.

It can be written as a sum of positive squares in 4 ways, for example, as 3549456 + 1294272576 = 1884^2 + 35976^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297822039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131908 + ... + 141404.

Almost surely, 2^1297822032 is an apocalyptic number.

1297822032 is a gapful number since it is divisible by the number (12) 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 1297822032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982745492).

1297822032 is an abundant number, since it is smaller than the sum of its proper divisors (2667668952).

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

1297822032 is a wasteful number, since it uses less digits than its factorization.

1297822032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9597 (or 9588 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1297822032 is about 36025.2971118907. The cubic root of 1297822032 is about 1090.7830503776.

The spelling of 1297822032 in words is "one billion, two hundred ninety-seven million, eight hundred twenty-two thousand, thirty-two".