128874622 has 4 divisors (see below), whose sum is σ = 193311936. Its totient is φ = 64437310.

The previous prime is 128874607. The next prime is 128874623. The reversal of 128874622 is 226478821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226478821 = 839 ⋅269939.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128874623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32218654 + ... + 32218657.

It is an arithmetic number, because the mean of its divisors is an integer number (48327984).

Almost surely, 2^128874622 is an apocalyptic number.

128874622 is a deficient number, since it is larger than the sum of its proper divisors (64437314).

128874622 is an equidigital number, since it uses as much as digits as its factorization.

128874622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64437313.

The product of its digits is 86016, while the sum is 40.

The square root of 128874622 is about 11352.2958911403. The cubic root of 128874622 is about 505.1136848261.

The spelling of 128874622 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, six hundred twenty-two".