128177948 has 6 divisors (see below), whose sum is σ = 224311416. Its totient is φ = 64088972.

The previous prime is 128177899. The next prime is 128177993. The reversal of 128177948 is 849771821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16022240 + ... + 16022247.

It is an arithmetic number, because the mean of its divisors is an integer number (37385236).

Almost surely, 2^128177948 is an apocalyptic number.

It is an amenable number.

128177948 is a deficient number, since it is larger than the sum of its proper divisors (96133468).

128177948 is a wasteful number, since it uses less digits than its factorization.

128177948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32044491 (or 32044489 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 128177948 is about 11321.5700324646. The cubic root of 128177948 is about 504.2018539322.

The spelling of 128177948 in words is "one hundred twenty-eight million, one hundred seventy-seven thousand, nine hundred forty-eight".