126728630 has 16 divisors (see below), whose sum is σ = 260699040. Its totient is φ = 43449792.

The previous prime is 126728629. The next prime is 126728647. The reversal of 126728630 is 36827621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905135 + ... + 905274.

It is an arithmetic number, because the mean of its divisors is an integer number (16293690).

Almost surely, 2^126728630 is an apocalyptic number.

126728630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126728630 is an abundant number, since it is smaller than the sum of its proper divisors (133970410).

126728630 is a wasteful number, since it uses less digits than its factorization.

126728630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810423.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 126728630 is about 11257.3811341715. The cubic root of 126728630 is about 502.2942963066.

The spelling of 126728630 in words is "one hundred twenty-six million, seven hundred twenty-eight thousand, six hundred thirty".