307628642 has 8 divisors (see below), whose sum is σ = 470149596. Its totient is φ = 150912112.

The previous prime is 307628621. The next prime is 307628653. The reversal of 307628642 is 246826703.

It can be written as a sum of positive squares in 2 ways, for example, as 307335961 + 292681 = 17531^2 + 541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 307628596 and 307628605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450973 + ... + 1451184.

Almost surely, 2^307628642 is an apocalyptic number.

307628642 is a deficient number, since it is larger than the sum of its proper divisors (162520954).

307628642 is a wasteful number, since it uses less digits than its factorization.

307628642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902212.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 307628642 is about 17539.3455408119. The cubic root of 307628642 is about 675.0598150926.

The spelling of 307628642 in words is "three hundred seven million, six hundred twenty-eight thousand, six hundred forty-two".