18520070 has 16 divisors (see below), whose sum is σ = 33421248. Its totient is φ = 7389120.

The previous prime is 18520063. The next prime is 18520097. The reversal of 18520070 is 7002581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2162 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (2088828).

Almost surely, 2^18520070 is an apocalyptic number.

18520070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18520070 is a deficient number, since it is larger than the sum of its proper divisors (14901178).

18520070 is a wasteful number, since it uses less digits than its factorization.

18520070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 18520070 is about 4303.4950912020. The cubic root of 18520070 is about 264.5742302584.

The spelling of 18520070 in words is "eighteen million, five hundred twenty thousand, seventy".