126551728 has 10 divisors (see below), whose sum is σ = 245194004. Its totient is φ = 63275856.

The previous prime is 126551701. The next prime is 126551731. The reversal of 126551728 is 827155621.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3954726 + ... + 3954757.

Almost surely, 2^126551728 is an apocalyptic number.

It is an amenable number.

126551728 is a deficient number, since it is larger than the sum of its proper divisors (118642276).

126551728 is an equidigital number, since it uses as much as digits as its factorization.

126551728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909491 (or 7909485 counting only the distinct ones).

The product of its digits is 33600, while the sum is 37.

The square root of 126551728 is about 11249.5212342570. The cubic root of 126551728 is about 502.0604679466.

The spelling of 126551728 in words is "one hundred twenty-six million, five hundred fifty-one thousand, seven hundred twenty-eight".