256416650 has 96 divisors (see below), whose sum is σ = 580462848. Its totient is φ = 82368000.

The previous prime is 256416617. The next prime is 256416653. The reversal of 256416650 is 56614652.

256416650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256416650.

It is not an unprimeable number, because it can be changed into a prime (256416653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 426350 + ... + 426950.

It is an arithmetic number, because the mean of its divisors is an integer number (6046488).

Almost surely, 2^256416650 is an apocalyptic number.

256416650 is an abundant number, since it is smaller than the sum of its proper divisors (324046198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256416650 is a wasteful number, since it uses less digits than its factorization.

256416650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 256416650 is about 16013.0150190400. The cubic root of 256416650 is about 635.3047083703.

The spelling of 256416650 in words is "two hundred fifty-six million, four hundred sixteen thousand, six hundred fifty".