18405070 has 32 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 7179168.

The previous prime is 18405061. The next prime is 18405089. The reversal of 18405070 is 7050481.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110127 + ... + 110293.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^18405070 is an apocalyptic number.

18405070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18405070 is a deficient number, since it is larger than the sum of its proper divisors (15560498).

18405070 is a wasteful number, since it uses less digits than its factorization.

18405070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 18405070 is about 4290.1130521235. The cubic root of 18405070 is about 264.0254700709.

The spelling of 18405070 in words is "eighteen million, four hundred five thousand, seventy".