128002450 has 12 divisors (see below), whose sum is σ = 238084650. Its totient is φ = 51200960.

The previous prime is 128002439. The next prime is 128002453. The reversal of 128002450 is 54200821.

It can be written as a sum of positive squares in 3 ways, for example, as 125283249 + 2719201 = 11193^2 + 1649^2 .

It is not an unprimeable number, because it can be changed into a prime (128002453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1279975 + ... + 1280074.

Almost surely, 2^128002450 is an apocalyptic number.

128002450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128002450 is a deficient number, since it is larger than the sum of its proper divisors (110082200).

128002450 is a wasteful number, since it uses less digits than its factorization.

128002450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560061 (or 2560056 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 128002450 is about 11313.8167741925. The cubic root of 128002450 is about 503.9716353609.

It can be divided in two parts, 12800 and 2450, that multiplied together give a square (31360000 = 5600²).

The spelling of 128002450 in words is "one hundred twenty-eight million, two thousand, four hundred fifty".