19625216 has 36 divisors (see below), whose sum is σ = 42194292. Its totient is φ = 9056256.

The previous prime is 19625189. The next prime is 19625219. The reversal of 19625216 is 61252691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 8761600 = 3296^2 + 2960^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19625219) 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, 380 + ... + 6276.

Almost surely, 2^19625216 is an apocalyptic number.

19625216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19625216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21097146).

19625216 is an abundant number, since it is smaller than the sum of its proper divisors (22569076).

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

19625216 is an equidigital number, since it uses as much as digits as its factorization.

19625216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 5912 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 19625216 is about 4430.0356657706. The cubic root of 19625216 is about 269.7355252012.

The spelling of 19625216 in words is "nineteen million, six hundred twenty-five thousand, two hundred sixteen".