308407 has 12 divisors (see below), whose sum is σ = 358344. Its totient is φ = 263120.

The previous prime is 308383. The next prime is 308411. The reversal of 308407 is 704803.

It is not a de Polignac number, because 308407 - 2¹¹ = 306359 is a prime.

It is a super-2 number, since 2×308407² = 190229755298, which contains 22 as substring.

It is a Duffinian number.

308407 is a modest number, since divided by 407 gives 308 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308407.

It is not an unprimeable number, because it can be changed into a prime (308437) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5793 + ... + 5845.

It is an arithmetic number, because the mean of its divisors is an integer number (29862).

2³⁰⁸⁴⁰⁷ is an apocalyptic number.

308407 is a deficient number, since it is larger than the sum of its proper divisors (49937).

308407 is a wasteful number, since it uses less digits than its factorization.

308407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 308407 is about 555.3440375119. The cubic root of 308407 is about 67.5628678115.

The spelling of 308407 in words is "three hundred eight thousand, four hundred seven".