256612080 has 40 divisors (see below), whose sum is σ = 795498192. Its totient is φ = 68429824.

The previous prime is 256612007. The next prime is 256612087. The reversal of 256612080 is 80216652.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534369 + ... + 534848.

Almost surely, 2^256612080 is an apocalyptic number.

256612080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256612080 is an abundant number, since it is smaller than the sum of its proper divisors (538886112).

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

256612080 is a wasteful number, since it uses less digits than its factorization.

256612080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069233 (or 1069227 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 256612080 is about 16019.1160804833. The cubic root of 256612080 is about 635.4660682377.

The spelling of 256612080 in words is "two hundred fifty-six million, six hundred twelve thousand, eighty".