308402 has 8 divisors (see below), whose sum is σ = 474012. Its totient is φ = 150400.

The previous prime is 308383. The next prime is 308411. The reversal of 308402 is 204803.

It can be written as a sum of positive squares in 2 ways, for example, as 279841 + 28561 = 529^2 + 169^2 .

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

It is a super-2 number, since 2×308402² = 190223587208, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799 + ... + 1962.

2³⁰⁸⁴⁰² is an apocalyptic number.

308402 is a deficient number, since it is larger than the sum of its proper divisors (165610).

308402 is a wasteful number, since it uses less digits than its factorization.

308402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 308402 is about 555.3395357797. The cubic root of 308402 is about 67.5625026921.

The spelling of 308402 in words is "three hundred eight thousand, four hundred two".