2780191260 has 144 divisors (see below), whose sum is σ = 10514230272. Its totient is φ = 577699200.

The previous prime is 2780191243. The next prime is 2780191277. The reversal of 2780191260 is 621910872.

2780191260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2780191243) and next prime (2780191277).

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86436 + ... + 114155.

It is an arithmetic number, because the mean of its divisors is an integer number (73015488).

Almost surely, 2^2780191260 is an apocalyptic number.

2780191260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780191260 is an abundant number, since it is smaller than the sum of its proper divisors (7734039012).

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

2780191260 is a wasteful number, since it uses less digits than its factorization.

2780191260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200624 (or 200619 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 2780191260 is about 52727.5190009923. The cubic root of 2780191260 is about 1406.1281129320.

The spelling of 2780191260 in words is "two billion, seven hundred eighty million, one hundred ninety-one thousand, two hundred sixty".