650728426 has 16 divisors (see below), whose sum is σ = 981348480. Its totient is φ = 323617680.

The previous prime is 650728399. The next prime is 650728433. The reversal of 650728426 is 624827056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348736 + ... + 350596.

It is an arithmetic number, because the mean of its divisors is an integer number (61334280).

Almost surely, 2^650728426 is an apocalyptic number.

650728426 is a deficient number, since it is larger than the sum of its proper divisors (330620054).

650728426 is a wasteful number, since it uses less digits than its factorization.

650728426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 650728426 is about 25509.3791770792. The cubic root of 650728426 is about 866.5625697129.

The spelling of 650728426 in words is "six hundred fifty million, seven hundred twenty-eight thousand, four hundred twenty-six".