1493428 has 6 divisors (see below), whose sum is σ = 2613506. Its totient is φ = 746712.

The previous prime is 1493423. The next prime is 1493441. The reversal of 1493428 is 8243941.

It can be written as a sum of positive squares in only one way, i.e., 1493284 + 144 = 1222^2 + 12^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1493428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186675 + ... + 186682.

2^1493428 is an apocalyptic number.

It is an amenable number.

1493428 is a deficient number, since it is larger than the sum of its proper divisors (1120078).

1493428 is a wasteful number, since it uses less digits than its factorization.

1493428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373361 (or 373359 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 1493428 is about 1222.0589183832. The cubic root of 1493428 is about 114.3040003478.

The spelling of 1493428 in words is "one million, four hundred ninety-three thousand, four hundred twenty-eight".