126643648 has 14 divisors (see below), whose sum is σ = 251308616. Its totient is φ = 63321792.

The previous prime is 126643631. The next prime is 126643651. The reversal of 126643648 is 846346621.

It is a super-2 number, since 2×126643648² = 32077227157495808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126643648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989340 + ... + 989467.

Almost surely, 2^126643648 is an apocalyptic number.

It is an amenable number.

126643648 is a deficient number, since it is larger than the sum of its proper divisors (124664968).

126643648 is an equidigital number, since it uses as much as digits as its factorization.

126643648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978819 (or 1978809 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 126643648 is about 11253.6059998562. The cubic root of 126643648 is about 502.1819946141.

The spelling of 126643648 in words is "one hundred twenty-six million, six hundred forty-three thousand, six hundred forty-eight".