256358496 has 48 divisors (see below), whose sum is σ = 691138224. Its totient is φ = 83142144.

The previous prime is 256358491. The next prime is 256358497. The reversal of 256358496 is 694853652.

256358496 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256358491) 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, 32535 + ... + 39638.

It is an arithmetic number, because the mean of its divisors is an integer number (14398713).

Almost surely, 2^256358496 is an apocalyptic number.

It is an amenable number.

256358496 is an abundant number, since it is smaller than the sum of its proper divisors (434779728).

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

256358496 is a wasteful number, since it uses less digits than its factorization.

256358496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72223 (or 72215 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The square root of 256358496 is about 16011.1990806435. The cubic root of 256358496 is about 635.2566767735.

The spelling of 256358496 in words is "two hundred fifty-six million, three hundred fifty-eight thousand, four hundred ninety-six".