260278920 has 320 divisors, whose sum is σ = 977486400. Its totient is φ = 61585920.

The previous prime is 260278901. The next prime is 260278927. The reversal of 260278920 is 29872062.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (260278927) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2387826 + ... + 2387934.

It is an arithmetic number, because the mean of its divisors is an integer number (3054645).

Almost surely, 2^260278920 is an apocalyptic number.

260278920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260278920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488743200).

260278920 is an abundant number, since it is smaller than the sum of its proper divisors (717207480).

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

260278920 is a wasteful number, since it uses less digits than its factorization.

260278920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 260278920 is about 16133.1621203036. The cubic root of 260278920 is about 638.4785801288.

The spelling of 260278920 in words is "two hundred sixty million, two hundred seventy-eight thousand, nine hundred twenty".