20282690 has 16 divisors (see below), whose sum is σ = 38430720. Its totient is φ = 7686000.

The previous prime is 20282663. The next prime is 20282701. The reversal of 20282690 is 9628202.

It is a happy number.

It is a super-2 number, since 2×20282690² = 822775027272200, which contains 22 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 53186 + ... + 53565.

It is an arithmetic number, because the mean of its divisors is an integer number (2401920).

Almost surely, 2^20282690 is an apocalyptic number.

20282690 is a deficient number, since it is larger than the sum of its proper divisors (18148030).

20282690 is a wasteful number, since it uses less digits than its factorization.

20282690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106777.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20282690 is about 4503.6307575111. The cubic root of 20282690 is about 272.7146808665.

The spelling of 20282690 in words is "twenty million, two hundred eighty-two thousand, six hundred ninety".