128419744 has 24 divisors (see below), whose sum is σ = 253804320. Its totient is φ = 63961536.

The previous prime is 128419723. The next prime is 128419747. The reversal of 128419744 is 447914821.

It is a junction number, because it is equal to n+sod(n) for n = 128419697 and 128419706.

It is not an unprimeable number, because it can be changed into a prime (128419747) 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, 787 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (10575180).

Almost surely, 2^128419744 is an apocalyptic number.

It is an amenable number.

128419744 is a deficient number, since it is larger than the sum of its proper divisors (125384576).

128419744 is a wasteful number, since it uses less digits than its factorization.

128419744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15532 (or 15524 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 128419744 is about 11332.2435554483. The cubic root of 128419744 is about 504.5186983758.

The spelling of 128419744 in words is "one hundred twenty-eight million, four hundred nineteen thousand, seven hundred forty-four".