2798178240 has 672 divisors, whose sum is σ = 11237244480. Its totient is φ = 583925760.

The previous prime is 2798178239. The next prime is 2798178263. The reversal of 2798178240 is 428718972.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2798178240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25671306 + ... + 25671414.

It is an arithmetic number, because the mean of its divisors is an integer number (16722090).

Almost surely, 2^2798178240 is an apocalyptic number.

2798178240 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 2798178240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5618622240).

2798178240 is an abundant number, since it is smaller than the sum of its proper divisors (8439066240).

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

2798178240 is a wasteful number, since it uses less digits than its factorization.

2798178240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 2798178240 is about 52897.8094064395. The cubic root of 2798178240 is about 1409.1540018342.

The spelling of 2798178240 in words is "two billion, seven hundred ninety-eight million, one hundred seventy-eight thousand, two hundred forty".