1625828 has 12 divisors (see below), whose sum is σ = 2899260. Its totient is φ = 797472.

The previous prime is 1625821. The next prime is 1625831. The reversal of 1625828 is 8285261.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 238144 = 1178^2 + 488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1625794 and 1625803.

It is not an unprimeable number, because it can be changed into a prime (1625821) 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 in 3 ways as a sum of consecutive naturals, for example, 3623 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (241605).

2^1625828 is an apocalyptic number.

It is an amenable number.

1625828 is a deficient number, since it is larger than the sum of its proper divisors (1273432).

1625828 is a wasteful number, since it uses less digits than its factorization.

1625828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726 (or 7724 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 1625828 is about 1275.0796053580. The cubic root of 1625828 is about 117.5866992531.

The spelling of 1625828 in words is "one million, six hundred twenty-five thousand, eight hundred twenty-eight".