2807420928 has 96 divisors (see below), whose sum is σ = 8060598000. Its totient is φ = 863797248.

The previous prime is 2807420923. The next prime is 2807420939. The reversal of 2807420928 is 8290247082.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2807420928² = 15763224533944762368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2807420928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2807420923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62298 + ... + 97446.

Almost surely, 2^2807420928 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 2807420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4030299000).

2807420928 is an abundant number, since it is smaller than the sum of its proper divisors (5253177072).

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

2807420928 is a wasteful number, since it uses less digits than its factorization.

2807420928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35187 (or 35167 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2807420928 is about 52985.1010001868. The cubic root of 2807420928 is about 1410.7038264724.

The spelling of 2807420928 in words is "two billion, eight hundred seven million, four hundred twenty thousand, nine hundred twenty-eight".