1023490 has 16 divisors (see below), whose sum is σ = 1984248. Its totient is φ = 377856.

The previous prime is 1023487. The next prime is 1023499. The reversal of 1023490 is 943201.

1023490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 332929 + 690561 = 577^2 + 831^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023499) 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, 3807 + ... + 4066.

2^1023490 is an apocalyptic number.

1023490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023490 is a deficient number, since it is larger than the sum of its proper divisors (960758).

1023490 is a wasteful number, since it uses less digits than its factorization.

1023490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1023490 is about 1011.6768258688. The cubic root of 1023490 is about 100.7769478864.

Adding to 1023490 its reverse (943201), we get a palindrome (1966691).

The spelling of 1023490 in words is "one million, twenty-three thousand, four hundred ninety".