1293428 has 24 divisors (see below), whose sum is σ = 2503872. Its totient is φ = 581504.

The previous prime is 1293421. The next prime is 1293433. The reversal of 1293428 is 8243921.

It is a self number, because there is not a number n which added to its sum of digits gives 1293428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (104328).

2^1293428 is an apocalyptic number.

It is an amenable number.

1293428 is a deficient number, since it is larger than the sum of its proper divisors (1210444).

1293428 is a wasteful number, since it uses less digits than its factorization.

1293428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 869 counting only the distinct ones).

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

The square root of 1293428 is about 1137.2897607910. The cubic root of 1293428 is about 108.9550638216.

The spelling of 1293428 in words is "one million, two hundred ninety-three thousand, four hundred twenty-eight".