30700405 has 16 divisors (see below), whose sum is σ = 37767744. Its totient is φ = 23950080.

The previous prime is 30700399. The next prime is 30700421. The reversal of 30700405 is 50400703.

It is not a de Polignac number, because 30700405 - 2¹⁷ = 30569333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37450 + ... + 38260.

It is an arithmetic number, because the mean of its divisors is an integer number (2360484).

Almost surely, 2^30700405 is an apocalyptic number.

It is an amenable number.

30700405 is a deficient number, since it is larger than the sum of its proper divisors (7067339).

30700405 is a wasteful number, since it uses less digits than its factorization.

30700405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 30700405 is about 5540.7946181031. The cubic root of 30700405 is about 313.1228069987.

The spelling of 30700405 in words is "thirty million, seven hundred thousand, four hundred five".