256601416 has 8 divisors (see below), whose sum is σ = 481127670. Its totient is φ = 128300704.

The previous prime is 256601399. The next prime is 256601419. The reversal of 256601416 is 614106652.

It can be written as a sum of positive squares in only one way, i.e., 145298916 + 111302500 = 12054^2 + 10550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (256601419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16037581 + ... + 16037596.

Almost surely, 2^256601416 is an apocalyptic number.

It is an amenable number.

256601416 is a deficient number, since it is larger than the sum of its proper divisors (224526254).

256601416 is a wasteful number, since it uses less digits than its factorization.

256601416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32075183 (or 32075179 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 256601416 is about 16018.7832247022. The cubic root of 256601416 is about 635.4572654512.

The spelling of 256601416 in words is "two hundred fifty-six million, six hundred one thousand, four hundred sixteen".