126728385 has 64 divisors (see below), whose sum is σ = 246220800. Its totient is φ = 54369792.

The previous prime is 126728369. The next prime is 126728429. The reversal of 126728385 is 583827621.

It is not a de Polignac number, because 126728385 - 2⁴ = 126728369 is a prime.

Its product of digits (161280) is a multiple of the sum of its prime divisors (630).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 277077 + ... + 277533.

It is an arithmetic number, because the mean of its divisors is an integer number (3847200).

Almost surely, 2^126728385 is an apocalyptic number.

126728385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126728385 is a deficient number, since it is larger than the sum of its proper divisors (119492415).

126728385 is a wasteful number, since it uses less digits than its factorization.

126728385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630.

The product of its digits is 161280, while the sum is 42.

The square root of 126728385 is about 11257.3702524169. The cubic root of 126728385 is about 502.2939726171.

The spelling of 126728385 in words is "one hundred twenty-six million, seven hundred twenty-eight thousand, three hundred eighty-five".