128874870 has 48 divisors (see below), whose sum is σ = 342877392. Its totient is φ = 33566400.

The previous prime is 128874859. The next prime is 128874871. The reversal of 128874870 is 78478821.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128874871) 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, 12781 + ... + 20520.

It is an arithmetic number, because the mean of its divisors is an integer number (7143279).

Almost surely, 2^128874870 is an apocalyptic number.

128874870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128874870 is an abundant number, since it is smaller than the sum of its proper divisors (214002522).

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

128874870 is a wasteful number, since it uses less digits than its factorization.

128874870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33357 (or 33354 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 128874870 is about 11352.3068140356. The cubic root of 128874870 is about 505.1140088312.

The spelling of 128874870 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, eight hundred seventy".