307828025 has 12 divisors (see below), whose sum is σ = 401797200. Its totient is φ = 233300880.

The previous prime is 307828019. The next prime is 307828033. The reversal of 307828025 is 520828703.

It is a happy number.

It is not a de Polignac number, because 307828025 - 2¹⁰ = 307827001 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 323555 + ... + 324504.

It is an arithmetic number, because the mean of its divisors is an integer number (33483100).

Almost surely, 2^307828025 is an apocalyptic number.

It is an amenable number.

307828025 is a deficient number, since it is larger than the sum of its proper divisors (93969175).

307828025 is a wasteful number, since it uses less digits than its factorization.

307828025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648088 (or 648083 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 307828025 is about 17545.0284981245. The cubic root of 307828025 is about 675.2056255112.

The spelling of 307828025 in words is "three hundred seven million, eight hundred twenty-eight thousand, twenty-five".