259422428 has 24 divisors (see below), whose sum is σ = 498664320. Its totient is φ = 117540720.

The previous prime is 259422419. The next prime is 259422461. The reversal of 259422428 is 824224952.

It is a super-2 number, since 2×259422428² = 134599992298830368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 259422391 and 259422400.

It is a congruent number.

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, 72458 + ... + 75953.

It is an arithmetic number, because the mean of its divisors is an integer number (20777680).

Almost surely, 2^259422428 is an apocalyptic number.

It is an amenable number.

259422428 is a deficient number, since it is larger than the sum of its proper divisors (239241892).

259422428 is a wasteful number, since it uses less digits than its factorization.

259422428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148457 (or 148455 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 259422428 is about 16106.5957917867. The cubic root of 259422428 is about 637.7774697824. Note that the first 3 decimals are identical.

The spelling of 259422428 in words is "two hundred fifty-nine million, four hundred twenty-two thousand, four hundred twenty-eight".