7794877420 has 48 divisors (see below), whose sum is σ = 17901223200. Its totient is φ = 2827537920.

The previous prime is 7794877393. The next prime is 7794877423. The reversal of 7794877420 is 247784977.

It is a super-2 number, since 2×7794877420² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (7794877423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46666 + ... + 133294.

It is an arithmetic number, because the mean of its divisors is an integer number (372942150).

Almost surely, 2^7794877420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7794877420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8950611600).

7794877420 is an abundant number, since it is smaller than the sum of its proper divisors (10106345780).

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

7794877420 is a wasteful number, since it uses less digits than its factorization.

7794877420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87058 (or 87056 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 55.

The square root of 7794877420 is about 88288.6030017465. The cubic root of 7794877420 is about 1982.7582396501.

The spelling of 7794877420 in words is "seven billion, seven hundred ninety-four million, eight hundred seventy-seven thousand, four hundred twenty".