1628793 has 12 divisors (see below), whose sum is σ = 2371668. Its totient is φ = 1077120.

The previous prime is 1628779. The next prime is 1628801. The reversal of 1628793 is 3978261.

It can be written as a sum of positive squares in 2 ways, for example, as 1272384 + 356409 = 1128^2 + 597^2 .

It is not a de Polignac number, because 1628793 - 2⁶ = 1628729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1628773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 573 + ... + 1893.

It is an arithmetic number, because the mean of its divisors is an integer number (197639).

2^1628793 is an apocalyptic number.

It is an amenable number.

1628793 is a deficient number, since it is larger than the sum of its proper divisors (742875).

1628793 is a wasteful number, since it uses less digits than its factorization.

1628793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464 (or 1461 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1628793 is about 1276.2417482593. The cubic root of 1628793 is about 117.6581362560.

The spelling of 1628793 in words is "one million, six hundred twenty-eight thousand, seven hundred ninety-three".