1020259278 has 24 divisors (see below), whose sum is σ = 2219378616. Its totient is φ = 338730000.

The previous prime is 1020259193. The next prime is 1020259313. The reversal of 1020259278 is 8729520201.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108393 + ... + 117428.

It is an arithmetic number, because the mean of its divisors is an integer number (92474109).

Almost surely, 2^1020259278 is an apocalyptic number.

1020259278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1020259278 is an abundant number, since it is smaller than the sum of its proper divisors (1199119338).

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

1020259278 is a wasteful number, since it uses less digits than its factorization.

1020259278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226080 (or 226077 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1020259278 is about 31941.4977419657. The cubic root of 1020259278 is about 1006.7079948580.

Adding to 1020259278 its reverse (8729520201), we get a palindrome (9749779479).

The spelling of 1020259278 in words is "one billion, twenty million, two hundred fifty-nine thousand, two hundred seventy-eight".