2278012782 has 64 divisors (see below), whose sum is σ = 4825184256. Its totient is φ = 715545600.

The previous prime is 2278012757. The next prime is 2278012783. The reversal of 2278012782 is 2872108722.

It is a self number, because there is not a number n which added to its sum of digits gives 2278012782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278012783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4919883 + ... + 4920345.

It is an arithmetic number, because the mean of its divisors is an integer number (75393504).

Almost surely, 2^2278012782 is an apocalyptic number.

2278012782 is an abundant number, since it is smaller than the sum of its proper divisors (2547171474).

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

2278012782 is a wasteful number, since it uses less digits than its factorization.

2278012782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 2278012782 is about 47728.5321584479. The cubic root of 2278012782 is about 1315.7863767433.

The spelling of 2278012782 in words is "two billion, two hundred seventy-eight million, twelve thousand, seven hundred eighty-two".