126661628 has 48 divisors (see below), whose sum is σ = 242712288. Its totient is φ = 57600000.

The previous prime is 126661627. The next prime is 126661697. The reversal of 126661628 is 826166621.

It is a super-2 number, since 2×126661628² = 32086336015220768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126661591 and 126661600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126661627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 504503 + ... + 504753.

It is an arithmetic number, because the mean of its divisors is an integer number (5056506).

Almost surely, 2^126661628 is an apocalyptic number.

It is an amenable number.

126661628 is a deficient number, since it is larger than the sum of its proper divisors (116050660).

126661628 is a wasteful number, since it uses less digits than its factorization.

126661628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 492 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 126661628 is about 11254.4048265557. The cubic root of 126661628 is about 502.2057589458.

The spelling of 126661628 in words is "one hundred twenty-six million, six hundred sixty-one thousand, six hundred twenty-eight".