306400395 has 32 divisors (see below), whose sum is σ = 562125312. Its totient is φ = 139606272.

The previous prime is 306400361. The next prime is 306400427. The reversal of 306400395 is 593004603.

It is a happy number.

It is not a de Polignac number, because 306400395 - 2⁷ = 306400267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28204 + ... + 37526.

It is an arithmetic number, because the mean of its divisors is an integer number (17566416).

Almost surely, 2^306400395 is an apocalyptic number.

306400395 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

306400395 is a deficient number, since it is larger than the sum of its proper divisors (255724917).

306400395 is a wasteful number, since it uses less digits than its factorization.

306400395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 306400395 is about 17504.2964725807. The cubic root of 306400395 is about 674.1601956417.

Adding to 306400395 its reverse (593004603), we get a palindrome (899404998).

The spelling of 306400395 in words is "three hundred six million, four hundred thousand, three hundred ninety-five".