19716252 has 12 divisors (see below), whose sum is σ = 46004616. Its totient is φ = 6572080.

The previous prime is 19716251. The next prime is 19716253. The reversal of 19716252 is 25261791.

It is an interprime number because it is at equal distance from previous prime (19716251) and next prime (19716253).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19716251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821499 + ... + 821522.

It is an arithmetic number, because the mean of its divisors is an integer number (3833718).

Almost surely, 2^19716252 is an apocalyptic number.

19716252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19716252 is an abundant number, since it is smaller than the sum of its proper divisors (26288364).

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

19716252 is a wasteful number, since it uses less digits than its factorization.

19716252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643028 (or 1643026 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 19716252 is about 4440.2986386053. The cubic root of 19716252 is about 270.1519583562.

The spelling of 19716252 in words is "nineteen million, seven hundred sixteen thousand, two hundred fifty-two".