19520016 has 80 divisors (see below), whose sum is σ = 53716800. Its totient is φ = 6096384.

The previous prime is 19520003. The next prime is 19520021. The reversal of 19520016 is 61002591.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51315 + ... + 51693.

It is an arithmetic number, because the mean of its divisors is an integer number (671460).

Almost surely, 2^19520016 is an apocalyptic number.

19520016 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 19520016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26858400).

19520016 is an abundant number, since it is smaller than the sum of its proper divisors (34196784).

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

19520016 is a wasteful number, since it uses less digits than its factorization.

19520016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 19520016 is about 4418.1462175895. The cubic root of 19520016 is about 269.2526934569.

The spelling of 19520016 in words is "nineteen million, five hundred twenty thousand, sixteen".