1297732 has 18 divisors (see below), whose sum is σ = 2339834. Its totient is φ = 629760.

The previous prime is 1297727. The next prime is 1297739. The reversal of 1297732 is 2377921.

It can be written as a sum of positive squares in 3 ways, for example, as 118336 + 1179396 = 344^2 + 1086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1297694 and 1297703.

It is not an unprimeable number, because it can be changed into a prime (1297739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6628 + ... + 6820.

2^1297732 is an apocalyptic number.

It is an amenable number.

1297732 is a deficient number, since it is larger than the sum of its proper divisors (1042102).

1297732 is a wasteful number, since it uses less digits than its factorization.

1297732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 236 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 1297732 is about 1139.1804071349. The cubic root of 1297732 is about 109.0757826670.

The spelling of 1297732 in words is "one million, two hundred ninety-seven thousand, seven hundred thirty-two".