20250984 has 64 divisors (see below), whose sum is σ = 55722240. Its totient is φ = 6094080.

The previous prime is 20250947. The next prime is 20250991. The reversal of 20250984 is 48905202.

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, 13974 + ... + 15354.

It is an arithmetic number, because the mean of its divisors is an integer number (870660).

Almost surely, 2^20250984 is an apocalyptic number.

20250984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20250984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27861120).

20250984 is an abundant number, since it is smaller than the sum of its proper divisors (35471256).

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

20250984 is a wasteful number, since it uses less digits than its factorization.

20250984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20250984 is about 4500.1093320052. The cubic root of 20250984 is about 272.5725037833.

The spelling of 20250984 in words is "twenty million, two hundred fifty thousand, nine hundred eighty-four".