1298432 has 26 divisors (see below), whose sum is σ = 2604738. Its totient is φ = 647168.

The previous prime is 1298387. The next prime is 1298467. The reversal of 1298432 is 2348921.

It can be written as a sum of positive squares in only one way, i.e., 802816 + 495616 = 896^2 + 704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1298395 and 1298404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3938 + ... + 4254.

2^1298432 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 1298432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302369).

1298432 is an abundant number, since it is smaller than the sum of its proper divisors (1306306).

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

1298432 is an frugal number, since it uses more digits than its factorization.

1298432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 319 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 1298432 is about 1139.4876041450. The cubic root of 1298432 is about 109.0953910616.

The spelling of 1298432 in words is "one million, two hundred ninety-eight thousand, four hundred thirty-two".