259778028 has 48 divisors (see below), whose sum is σ = 621724544. Its totient is φ = 84395520.

The previous prime is 259778021. The next prime is 259778033. The reversal of 259778028 is 820877952.

It is not an unprimeable number, because it can be changed into a prime (259778021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76323 + ... + 79653.

Almost surely, 2^259778028 is an apocalyptic number.

It is an amenable number.

259778028 is an abundant number, since it is smaller than the sum of its proper divisors (361946516).

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

259778028 is a wasteful number, since it uses less digits than its factorization.

259778028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 259778028 is about 16117.6309673599. The cubic root of 259778028 is about 638.0687451924.

The spelling of 259778028 in words is "two hundred fifty-nine million, seven hundred seventy-eight thousand, twenty-eight".