18205070 has 32 divisors (see below), whose sum is σ = 35592480. Its totient is φ = 6664320.

The previous prime is 18205067. The next prime is 18205081. The reversal of 18205070 is 7050281.

18205070 = 566² + 567² + ... + 617².

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, 16496 + ... + 17564.

It is an arithmetic number, because the mean of its divisors is an integer number (1112265).

Almost surely, 2^18205070 is an apocalyptic number.

18205070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18205070 is a deficient number, since it is larger than the sum of its proper divisors (17387410).

18205070 is a wasteful number, since it uses less digits than its factorization.

18205070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220.

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

The square root of 18205070 is about 4266.7399733286. The cubic root of 18205070 is about 263.0656344162.

The spelling of 18205070 in words is "eighteen million, two hundred five thousand, seventy".