1308428 has 24 divisors (see below), whose sum is σ = 2528064. Its totient is φ = 587600.

The previous prime is 1308421. The next prime is 1308457. The reversal of 1308428 is 8248031.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1308397 and 1308406.

It is not an unprimeable number, because it can be changed into a prime (1308421) 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, 5651 + ... + 5877.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2^1308428 is an apocalyptic number.

It is an amenable number.

1308428 is a deficient number, since it is larger than the sum of its proper divisors (1219636).

1308428 is a wasteful number, since it uses less digits than its factorization.

1308428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1308428 is about 1143.8653766943. The cubic root of 1308428 is about 109.3746332505.

It can be divided in two parts, 130 and 8428, that added together give a palindrome (8558).

The spelling of 1308428 in words is "one million, three hundred eight thousand, four hundred twenty-eight".