20841077 has 8 divisors (see below), whose sum is σ = 21334200. Its totient is φ = 20352960.

The previous prime is 20841049. The next prime is 20841089. The reversal of 20841077 is 77014802.

It can be written as a sum of positive squares in 4 ways, for example, as 1136356 + 19704721 = 1066^2 + 4439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20841077 - 2¹⁴ = 20824693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20841277) 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, 7943 + ... + 10235.

It is an arithmetic number, because the mean of its divisors is an integer number (2666775).

Almost surely, 2^20841077 is an apocalyptic number.

It is an amenable number.

20841077 is a deficient number, since it is larger than the sum of its proper divisors (493123).

20841077 is a wasteful number, since it uses less digits than its factorization.

20841077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20841077 is about 4565.2028432480. The cubic root of 20841077 is about 275.1946918834.

Adding to 20841077 its reverse (77014802), we get a palindrome (97855879).

The spelling of 20841077 in words is "twenty million, eight hundred forty-one thousand, seventy-seven".