2798415900 has 648 divisors, whose sum is σ = 11223969120. Its totient is φ = 570286080.

The previous prime is 2798415889. The next prime is 2798415901. The reversal of 2798415900 is 95148972.

It is a super-2 number, since 2×2798415900² = 15662263098745620000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798415901) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 52800274 + ... + 52800326.

It is an arithmetic number, because the mean of its divisors is an integer number (17320940).

Almost surely, 2^2798415900 is an apocalyptic number.

2798415900 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 2798415900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5611984560).

2798415900 is an abundant number, since it is smaller than the sum of its proper divisors (8425553220).

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

2798415900 is a wasteful number, since it uses less digits than its factorization.

2798415900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2798415900 is about 52900.0557655661. The cubic root of 2798415900 is about 1409.1938956545.

The spelling of 2798415900 in words is "two billion, seven hundred ninety-eight million, four hundred fifteen thousand, nine hundred".