256779452 has 48 divisors (see below), whose sum is σ = 500774400. Its totient is φ = 114649920.

The previous prime is 256779431. The next prime is 256779463. The reversal of 256779452 is 254977652.

It is a junction number, because it is equal to n+sod(n) for n = 256779397 and 256779406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123074 + ... + 125142.

It is an arithmetic number, because the mean of its divisors is an integer number (10432800).

Almost surely, 2^256779452 is an apocalyptic number.

It is an amenable number.

256779452 is a deficient number, since it is larger than the sum of its proper divisors (243994948).

256779452 is a wasteful number, since it uses less digits than its factorization.

256779452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2184 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The square root of 256779452 is about 16024.3393623575. The cubic root of 256779452 is about 635.6041964600.

The spelling of 256779452 in words is "two hundred fifty-six million, seven hundred seventy-nine thousand, four hundred fifty-two".