16427520 has 240 divisors, whose sum is σ = 61281792. Its totient is φ = 4055040.

The previous prime is 16427513. The next prime is 16427527. The reversal of 16427520 is 2572461.

It is an interprime number because it is at equal distance from previous prime (16427513) and next prime (16427527).

It is a tau number, because it is divible by the number of its divisors (240).

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (16427527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 529905 + ... + 529935.

Almost surely, 2^16427520 is an apocalyptic number.

16427520 is a gapful number since it is divisible by the number (10) 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 16427520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30640896).

16427520 is an abundant number, since it is smaller than the sum of its proper divisors (44854272).

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

16427520 is a wasteful number, since it uses less digits than its factorization.

16427520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 16427520 is about 4053.0877118562. The cubic root of 16427520 is about 254.2088513098.

Adding to 16427520 its reverse (2572461), we get a palindrome (18999981).

The spelling of 16427520 in words is "sixteen million, four hundred twenty-seven thousand, five hundred twenty".