307128964 has 6 divisors (see below), whose sum is σ = 537475694. Its totient is φ = 153564480.

The previous prime is 307128949. The next prime is 307128989. The reversal of 307128964 is 469821703.

It can be written as a sum of positive squares in only one way, i.e., 237406464 + 69722500 = 15408^2 + 8350^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38391117 + ... + 38391124.

Almost surely, 2^307128964 is an apocalyptic number.

It is an amenable number.

307128964 is a deficient number, since it is larger than the sum of its proper divisors (230346730).

307128964 is a wasteful number, since it uses less digits than its factorization.

307128964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76782245 (or 76782243 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 307128964 is about 17525.0952636498. The cubic root of 307128964 is about 674.6941194797.

The spelling of 307128964 in words is "three hundred seven million, one hundred twenty-eight thousand, nine hundred sixty-four".