307780078328 has 32 divisors (see below), whose sum is σ = 602641740960. Its totient is φ = 147085910400.

The previous prime is 307780078301. The next prime is 307780078343. The reversal of 307780078328 is 823870087703.

It is a self number, because there is not a number n which added to its sum of digits gives 307780078328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403475 + ... + 882242.

It is an arithmetic number, because the mean of its divisors is an integer number (18832554405).

Almost surely, 2^307780078328 is an apocalyptic number.

It is an amenable number.

307780078328 is a deficient number, since it is larger than the sum of its proper divisors (294861662632).

307780078328 is a wasteful number, since it uses less digits than its factorization.

307780078328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287047 (or 1287043 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 307780078328 in words is "three hundred seven billion, seven hundred eighty million, seventy-eight thousand, three hundred twenty-eight".