2447069778 has 96 divisors (see below), whose sum is σ = 5630264640. Its totient is φ = 796340160.

The previous prime is 2447069773. The next prime is 2447069783. The reversal of 2447069778 is 8779607442.

It is an interprime number because it is at equal distance from previous prime (2447069773) and next prime (2447069783).

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 (2447069773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5840053 + ... + 5840471.

It is an arithmetic number, because the mean of its divisors is an integer number (58648590).

Almost surely, 2^2447069778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2447069778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2815132320).

2447069778 is an abundant number, since it is smaller than the sum of its proper divisors (3183194862).

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

2447069778 is a wasteful number, since it uses less digits than its factorization.

2447069778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The square root of 2447069778 is about 49467.8661152874. The cubic root of 2447069778 is about 1347.5620890131.

The spelling of 2447069778 in words is "two billion, four hundred forty-seven million, sixty-nine thousand, seven hundred seventy-eight".