1025428 has 12 divisors (see below), whose sum is σ = 1803060. Its totient is φ = 510272.

The previous prime is 1025419. The next prime is 1025443. The reversal of 1025428 is 8245201.

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 806404 = 468^2 + 898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1025399 and 1025408.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 600 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (150255).

2^1025428 is an apocalyptic number.

It is an amenable number.

1025428 is a deficient number, since it is larger than the sum of its proper divisors (777632).

1025428 is a wasteful number, since it uses less digits than its factorization.

1025428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1025428 is about 1012.6341886387. The cubic root of 1025428 is about 100.8405155430.

The spelling of 1025428 in words is "one million, twenty-five thousand, four hundred twenty-eight".