20341881 has 32 divisors (see below), whose sum is σ = 35256320. Its totient is φ = 11349072.

The previous prime is 20341879. The next prime is 20341891. The reversal of 20341881 is 18814302.

It is not a de Polignac number, because 20341881 - 2¹ = 20341879 is a prime.

It is a super-2 number, since 2×20341881² = 827584245236322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20341801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6876 + ... + 9378.

It is an arithmetic number, because the mean of its divisors is an integer number (1101760).

Almost surely, 2^20341881 is an apocalyptic number.

20341881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20341881 is a deficient number, since it is larger than the sum of its proper divisors (14914439).

20341881 is a wasteful number, since it uses less digits than its factorization.

20341881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20341881 is about 4510.1974457888. The cubic root of 20341881 is about 272.9797110873.

The spelling of 20341881 in words is "twenty million, three hundred forty-one thousand, eight hundred eighty-one".