1397284 has 18 divisors (see below), whose sum is σ = 2844870. Its totient is φ = 598752.

The previous prime is 1397267. The next prime is 1397287. The reversal of 1397284 is 4827931.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 142884 = 1120^2 + 378^2 .

It is not an unprimeable number, because it can be changed into a prime (1397287) 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, 3369 + ... + 3760.

2^1397284 is an apocalyptic number.

1397284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1397284 is an abundant number, since it is smaller than the sum of its proper divisors (1447586).

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

1397284 is a wasteful number, since it uses less digits than its factorization.

1397284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7147 (or 7138 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1397284 is about 1182.0676799575. The cubic root of 1397284 is about 111.7965054916.

It can be divided in two parts, 1397 and 284, that added together give a square (1681 = 41²).

The spelling of 1397284 in words is "one million, three hundred ninety-seven thousand, two hundred eighty-four".