2778784032 has 48 divisors (see below), whose sum is σ = 7312781952. Its totient is φ = 923915520.

The previous prime is 2778783971. The next prime is 2778784033. The reversal of 2778784032 is 2304878772.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (2778784033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 74567.

It is an arithmetic number, because the mean of its divisors is an integer number (152349624).

Almost surely, 2^2778784032 is an apocalyptic number.

It is an amenable number.

2778784032 is an abundant number, since it is smaller than the sum of its proper divisors (4533997920).

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

2778784032 is a wasteful number, since it uses less digits than its factorization.

2778784032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73321 (or 73313 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 48.

The square root of 2778784032 is about 52714.1729708434. The cubic root of 2778784032 is about 1405.8908298801.

The spelling of 2778784032 in words is "two billion, seven hundred seventy-eight million, seven hundred eighty-four thousand, thirty-two".