1023216 has 20 divisors (see below), whose sum is σ = 2643432. Its totient is φ = 341056.

The previous prime is 1023203. The next prime is 1023221. The reversal of 1023216 is 6123201.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1023195 and 1023204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10611 + ... + 10706.

2^1023216 is an apocalyptic number.

1023216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1023216 is an abundant number, since it is smaller than the sum of its proper divisors (1620216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023216 is a wasteful number, since it uses less digits than its factorization.

1023216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21328 (or 21322 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1023216 is about 1011.5413980653. The cubic root of 1023216 is about 100.7679540359.

Subtracting from 1023216 its sum of digits (15), we obtain a palindrome (1023201).

Adding to 1023216 its reverse (6123201), we get a palindrome (7146417).

The spelling of 1023216 in words is "one million, twenty-three thousand, two hundred sixteen".