23021016 has 16 divisors (see below), whose sum is σ = 57552600. Its totient is φ = 7673664.

The previous prime is 23020997. The next prime is 23021029. The reversal of 23021016 is 61012032.

It is a junction number, because it is equal to n+sod(n) for n = 23020986 and 23021004.

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, 479581 + ... + 479628.

Almost surely, 2^23021016 is an apocalyptic number.

It is an amenable number.

23021016 is an abundant number, since it is smaller than the sum of its proper divisors (34531584).

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

23021016 is a wasteful number, since it uses less digits than its factorization.

23021016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959218 (or 959214 counting only the distinct ones).

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

The square root of 23021016 is about 4798.0220924877. The cubic root of 23021016 is about 284.4732900344.

Adding to 23021016 its reverse (61012032), we get a palindrome (84033048).

The spelling of 23021016 in words is "twenty-three million, twenty-one thousand, sixteen".