128862377 has 8 divisors (see below), whose sum is σ = 148154496. Its totient is φ = 109791072.

The previous prime is 128862361. The next prime is 128862449. The reversal of 128862377 is 773268821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128862377 - 2⁴ = 128862361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128862277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53948 + ... + 56285.

It is an arithmetic number, because the mean of its divisors is an integer number (18519312).

Almost surely, 2^128862377 is an apocalyptic number.

It is an amenable number.

128862377 is a deficient number, since it is larger than the sum of its proper divisors (19292119).

128862377 is a wasteful number, since it uses less digits than its factorization.

128862377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110407.

The product of its digits is 225792, while the sum is 44.

The square root of 128862377 is about 11351.7565601100. The cubic root of 128862377 is about 505.0976865561.

The spelling of 128862377 in words is "one hundred twenty-eight million, eight hundred sixty-two thousand, three hundred seventy-seven".