128792738 has 8 divisors (see below), whose sum is σ = 194346432. Its totient is φ = 64010596.

The previous prime is 128792707. The next prime is 128792743. The reversal of 128792738 is 837297821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128792692 and 128792701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192470 + ... + 193137.

It is an arithmetic number, because the mean of its divisors is an integer number (24293304).

Almost surely, 2^128792738 is an apocalyptic number.

128792738 is a deficient number, since it is larger than the sum of its proper divisors (65553694).

128792738 is a wasteful number, since it uses less digits than its factorization.

128792738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385776.

The product of its digits is 338688, while the sum is 47.

The square root of 128792738 is about 11348.6888229434. The cubic root of 128792738 is about 505.0066829165.

The spelling of 128792738 in words is "one hundred twenty-eight million, seven hundred ninety-two thousand, seven hundred thirty-eight".