128426782 has 16 divisors (see below), whose sum is σ = 210771072. Its totient is φ = 58204120.

The previous prime is 128426747. The next prime is 128426797. The reversal of 128426782 is 287624821.

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, 778 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (13173192).

Almost surely, 2^128426782 is an apocalyptic number.

128426782 is a deficient number, since it is larger than the sum of its proper divisors (82344290).

128426782 is a wasteful number, since it uses less digits than its factorization.

128426782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17183.

The product of its digits is 86016, while the sum is 40.

The square root of 128426782 is about 11332.5540810534. The cubic root of 128426782 is about 504.5279148654.

The spelling of 128426782 in words is "one hundred twenty-eight million, four hundred twenty-six thousand, seven hundred eighty-two".