2928078425 has 6 divisors (see below), whose sum is σ = 3630817278. Its totient is φ = 2342462720.

The previous prime is 2928078397. The next prime is 2928078443. The reversal of 2928078425 is 5248708292.

It can be written as a sum of positive squares in 3 ways, for example, as 55547209 + 2872531216 = 7453^2 + 53596^2 .

It is not a de Polignac number, because 2928078425 - 2⁸ = 2928078169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2928078425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58561544 + ... + 58561593.

It is an arithmetic number, because the mean of its divisors is an integer number (605136213).

Almost surely, 2^2928078425 is an apocalyptic number.

2928078425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2928078425 is a deficient number, since it is larger than the sum of its proper divisors (702738853).

2928078425 is a wasteful number, since it uses less digits than its factorization.

2928078425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117123147 (or 117123142 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2928078425 is about 54111.7216968745. The cubic root of 2928078425 is about 1430.6307916876.

The spelling of 2928078425 in words is "two billion, nine hundred twenty-eight million, seventy-eight thousand, four hundred twenty-five".