20877341 has 4 divisors (see below), whose sum is σ = 20886684. Its totient is φ = 20868000.

The previous prime is 20877313. The next prime is 20877347. The reversal of 20877341 is 14377802.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14377802 = 2 ⋅7188901.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 4708900 = 4021^2 + 2170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20877341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20877298 and 20877307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20877347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (5221671).

Almost surely, 2^20877341 is an apocalyptic number.

It is an amenable number.

20877341 is a deficient number, since it is larger than the sum of its proper divisors (9343).

20877341 is an equidigital number, since it uses as much as digits as its factorization.

20877341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9342.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20877341 is about 4569.1729010840. The cubic root of 20877341 is about 275.3542146312.

The spelling of 20877341 in words is "twenty million, eight hundred seventy-seven thousand, three hundred forty-one".