128616450 has 48 divisors (see below), whose sum is σ = 329978880. Its totient is φ = 33113920.

The previous prime is 128616443. The next prime is 128616451. The reversal of 128616450 is 54616821.

It is a super-3 number, since 3×128616450³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128616451) 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, 10434 + ... + 19133.

It is an arithmetic number, because the mean of its divisors is an integer number (6874560).

Almost surely, 2^128616450 is an apocalyptic number.

128616450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128616450 is an abundant number, since it is smaller than the sum of its proper divisors (201362430).

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

128616450 is a wasteful number, since it uses less digits than its factorization.

128616450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29611 (or 29606 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 128616450 is about 11340.9192749089. The cubic root of 128616450 is about 504.7761645672.

The spelling of 128616450 in words is "one hundred twenty-eight million, six hundred sixteen thousand, four hundred fifty".