128365794 has 12 divisors (see below), whose sum is σ = 278125926. Its totient is φ = 42788592.

The previous prime is 128365781. The next prime is 128365801. The reversal of 128365794 is 497563821.

It can be written as a sum of positive squares in only one way, i.e., 112084569 + 16281225 = 10587^2 + 4035^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3565699 + ... + 3565734.

Almost surely, 2^128365794 is an apocalyptic number.

128365794 is an abundant number, since it is smaller than the sum of its proper divisors (149760132).

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

128365794 is a wasteful number, since it uses less digits than its factorization.

128365794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131441 (or 7131438 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 128365794 is about 11329.8629294445. The cubic root of 128365794 is about 504.4480379113.

The spelling of 128365794 in words is "one hundred twenty-eight million, three hundred sixty-five thousand, seven hundred ninety-four".