20057982 has 16 divisors (see below), whose sum is σ = 45846912. Its totient is φ = 5730840.

The previous prime is 20057981. The next prime is 20057987. The reversal of 20057982 is 28975002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238744 + ... + 238827.

It is an arithmetic number, because the mean of its divisors is an integer number (2865432).

Almost surely, 2^20057982 is an apocalyptic number.

20057982 is an abundant number, since it is smaller than the sum of its proper divisors (25788930).

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

20057982 is a wasteful number, since it uses less digits than its factorization.

20057982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477583.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20057982 is about 4478.6138480561. The cubic root of 20057982 is about 271.7038208476.

It can be divided in two parts, 200579 and 82, that added together give a triangular number (200661 = T₆₃₃).

The spelling of 20057982 in words is "twenty million, fifty-seven thousand, nine hundred eighty-two".