16864572 has 24 divisors (see below), whose sum is σ = 39702096. Its totient is φ = 5571328.

The previous prime is 16864553. The next prime is 16864577. The reversal of 16864572 is 27546861.

It is a self number, because there is not a number n which added to its sum of digits gives 16864572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864577) 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, 4863 + ... + 7574.

It is an arithmetic number, because the mean of its divisors is an integer number (1654254).

Almost surely, 2^16864572 is an apocalyptic number.

16864572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16864572 is an abundant number, since it is smaller than the sum of its proper divisors (22837524).

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

16864572 is a wasteful number, since it uses less digits than its factorization.

16864572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12557 (or 12555 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 16864572 is about 4106.6497294023. The cubic root of 16864572 is about 256.4435466578.

The spelling of 16864572 in words is "sixteen million, eight hundred sixty-four thousand, five hundred seventy-two".