128071924 has 12 divisors (see below), whose sum is σ = 224493444. Its totient is φ = 63930944.

The previous prime is 128071921. The next prime is 128071927. The reversal of 128071924 is 429170821.

It is an interprime number because it is at equal distance from previous prime (128071921) and next prime (128071927).

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 121660900 = 2532^2 + 11030^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128071924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128071921) 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, 23479 + ... + 28414.

It is an arithmetic number, because the mean of its divisors is an integer number (18707787).

Almost surely, 2^128071924 is an apocalyptic number.

It is an amenable number.

128071924 is a deficient number, since it is larger than the sum of its proper divisors (96421520).

128071924 is a wasteful number, since it uses less digits than its factorization.

128071924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52514 (or 52512 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 128071924 is about 11316.8866743464. The cubic root of 128071924 is about 504.0627966182.

The spelling of 128071924 in words is "one hundred twenty-eight million, seventy-one thousand, nine hundred twenty-four".