1397530 has 8 divisors (see below), whose sum is σ = 2515572. Its totient is φ = 559008.

The previous prime is 1397521. The next prime is 1397531. The reversal of 1397530 is 357931.

It can be written as a sum of positive squares in 2 ways, for example, as 1329409 + 68121 = 1153^2 + 261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1397531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69867 + ... + 69886.

2^1397530 is an apocalyptic number.

1397530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397530 is a deficient number, since it is larger than the sum of its proper divisors (1118042).

1397530 is a wasteful number, since it uses less digits than its factorization.

1397530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139760.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 1397530 is about 1182.1717303336. The cubic root of 1397530 is about 111.8030659157.

The spelling of 1397530 in words is "one million, three hundred ninety-seven thousand, five hundred thirty".