256230436 has 24 divisors (see below), whose sum is σ = 559048896. Its totient is φ = 99829920.

The previous prime is 256230427. The next prime is 256230449. The reversal of 256230436 is 634032652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256230398 and 256230407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415651 + ... + 416266.

It is an arithmetic number, because the mean of its divisors is an integer number (23293704).

Almost surely, 2^256230436 is an apocalyptic number.

It is an amenable number.

256230436 is an abundant number, since it is smaller than the sum of its proper divisors (302818460).

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

256230436 is a wasteful number, since it uses less digits than its factorization.

256230436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831939 (or 831937 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 256230436 is about 16007.1995052226. The cubic root of 256230436 is about 635.1508815416.

The spelling of 256230436 in words is "two hundred fifty-six million, two hundred thirty thousand, four hundred thirty-six".