128773446 has 16 divisors (see below), whose sum is σ = 257707008. Its totient is φ = 42897800.

The previous prime is 128773367. The next prime is 128773471. The reversal of 128773446 is 644377821.

It is a junction number, because it is equal to n+sod(n) for n = 128773398 and 128773407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5491 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (16106688).

Almost surely, 2^128773446 is an apocalyptic number.

128773446 is an abundant number, since it is smaller than the sum of its proper divisors (128933562).

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

128773446 is a wasteful number, since it uses less digits than its factorization.

128773446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347.

The product of its digits is 225792, while the sum is 42.

The square root of 128773446 is about 11347.8388250803. The cubic root of 128773446 is about 504.9814664962.

The spelling of 128773446 in words is "one hundred twenty-eight million, seven hundred seventy-three thousand, four hundred forty-six".