2778028488 has 48 divisors (see below), whose sum is σ = 7802492880. Its totient is φ = 926008848.

The previous prime is 2778028447. The next prime is 2778028489. The reversal of 2778028488 is 8848208772.

It is a super-2 number, since 2×2778028488² = 15434884560279132288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2778028489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712570 + ... + 716457.

It is an arithmetic number, because the mean of its divisors is an integer number (162551935).

Almost surely, 2^2778028488 is an apocalyptic number.

It is an amenable number.

2778028488 is an abundant number, since it is smaller than the sum of its proper divisors (5024464392).

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

2778028488 is a wasteful number, since it uses less digits than its factorization.

2778028488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429048 (or 1429032 counting only the distinct ones).

The product of its (nonzero) digits is 3211264, while the sum is 54.

The square root of 2778028488 is about 52707.0060618131. The cubic root of 2778028488 is about 1405.7633990022.

The spelling of 2778028488 in words is "two billion, seven hundred seventy-eight million, twenty-eight thousand, four hundred eighty-eight".