20501382 has 16 divisors (see below), whose sum is σ = 44730432. Its totient is φ = 6212520.

The previous prime is 20501381. The next prime is 20501389. The reversal of 20501382 is 28310502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20501381) 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, 155248 + ... + 155379.

It is an arithmetic number, because the mean of its divisors is an integer number (2795652).

Almost surely, 2^20501382 is an apocalyptic number.

20501382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20501382 is an abundant number, since it is smaller than the sum of its proper divisors (24229050).

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

20501382 is a wasteful number, since it uses less digits than its factorization.

20501382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310643.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20501382 is about 4527.8451828657. The cubic root of 20501382 is about 273.6913337306.

Adding to 20501382 its reverse (28310502), we get a palindrome (48811884).

The spelling of 20501382 in words is "twenty million, five hundred one thousand, three hundred eighty-two".