20151882 has 16 divisors (see below), whose sum is σ = 44782080. Its totient is φ = 6717276.

The previous prime is 20151881. The next prime is 20151883. The reversal of 20151882 is 28815102.

It is an interprime number because it is at equal distance from previous prime (20151881) and next prime (20151883).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20151881) 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, 186538 + ... + 186645.

It is an arithmetic number, because the mean of its divisors is an integer number (2798880).

Almost surely, 2^20151882 is an apocalyptic number.

20151882 is an abundant number, since it is smaller than the sum of its proper divisors (24630198).

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

20151882 is a wasteful number, since it uses less digits than its factorization.

20151882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373194 (or 373188 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 20151882 is about 4489.0847619532. The cubic root of 20151882 is about 272.1271482390.

Adding to 20151882 its reverse (28815102), we get a palindrome (48966984).

The spelling of 20151882 in words is "twenty million, one hundred fifty-one thousand, eight hundred eighty-two".