128377796 has 6 divisors (see below), whose sum is σ = 224661150. Its totient is φ = 64188896.

The previous prime is 128377787. The next prime is 128377853. The reversal of 128377796 is 697773821.

It can be written as a sum of positive squares in only one way, i.e., 125440000 + 2937796 = 11200^2 + 1714^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16047221 + ... + 16047228.

It is an arithmetic number, because the mean of its divisors is an integer number (37443525).

Almost surely, 2^128377796 is an apocalyptic number.

It is an amenable number.

128377796 is a deficient number, since it is larger than the sum of its proper divisors (96283354).

128377796 is a wasteful number, since it uses less digits than its factorization.

128377796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094453 (or 32094451 counting only the distinct ones).

The product of its digits is 889056, while the sum is 50.

The square root of 128377796 is about 11330.3925792534. The cubic root of 128377796 is about 504.4637591210.

The spelling of 128377796 in words is "one hundred twenty-eight million, three hundred seventy-seven thousand, seven hundred ninety-six".