256046772 has 12 divisors (see below), whose sum is σ = 597442496. Its totient is φ = 85348920.

The previous prime is 256046761. The next prime is 256046801. The reversal of 256046772 is 277640652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 256046772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668604 + ... + 10668627.

Almost surely, 2^256046772 is an apocalyptic number.

It is an amenable number.

256046772 is an abundant number, since it is smaller than the sum of its proper divisors (341395724).

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

256046772 is a wasteful number, since it uses less digits than its factorization.

256046772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337238 (or 21337236 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 256046772 is about 16001.4615582452. The cubic root of 256046772 is about 634.9990881835. Note that the first 3 decimals are identical.

The spelling of 256046772 in words is "two hundred fifty-six million, forty-six thousand, seven hundred seventy-two".