20348377 has 6 divisors (see below), whose sum is σ = 23670618. Its totient is φ = 17441424.

The previous prime is 20348359. The next prime is 20348429. The reversal of 20348377 is 77384302.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 9616201 = 3276^2 + 3101^2 .

It is not a de Polignac number, because 20348377 - 2¹⁹ = 19824089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20348357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207588 + ... + 207685.

It is an arithmetic number, because the mean of its divisors is an integer number (3945103).

Almost surely, 2^20348377 is an apocalyptic number.

It is an amenable number.

20348377 is a deficient number, since it is larger than the sum of its proper divisors (3322241).

20348377 is an equidigital number, since it uses as much as digits as its factorization.

20348377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415287 (or 415280 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 20348377 is about 4510.9175341609. The cubic root of 20348377 is about 273.0087658811.

The spelling of 20348377 in words is "twenty million, three hundred forty-eight thousand, three hundred seventy-seven".