2178452808 has 96 divisors (see below), whose sum is σ = 6828307200. Its totient is φ = 614525184.

The previous prime is 2178452791. The next prime is 2178452813. The reversal of 2178452808 is 8082548712.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12460 + ... + 67172.

It is an arithmetic number, because the mean of its divisors is an integer number (71128200).

Almost surely, 2^2178452808 is an apocalyptic number.

2178452808 is a gapful number since it is divisible by the number (28) 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 2178452808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3414153600).

2178452808 is an abundant number, since it is smaller than the sum of its proper divisors (4649854392).

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

2178452808 is a wasteful number, since it uses less digits than its factorization.

2178452808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54811 (or 54804 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 2178452808 is about 46673.8985729712. The cubic root of 2178452808 is about 1296.3314338660.

The spelling of 2178452808 in words is "two billion, one hundred seventy-eight million, four hundred fifty-two thousand, eight hundred eight".