20260986 has 32 divisors (see below), whose sum is σ = 41472000. Its totient is φ = 6597360.

The previous prime is 20260979. The next prime is 20260993. The reversal of 20260986 is 68906202.

It is an interprime number because it is at equal distance from previous prime (20260979) and next prime (20260993).

It is a Curzon 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, 84655 + ... + 84893.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 2^20260986 is an apocalyptic number.

20260986 is an abundant number, since it is smaller than the sum of its proper divisors (21211014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20260986 is a wasteful number, since it uses less digits than its factorization.

20260986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20260986 is about 4501.2205011530. The cubic root of 20260986 is about 272.6173710923.

The spelling of 20260986 in words is "twenty million, two hundred sixty thousand, nine hundred eighty-six".