20377671 has 8 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 12870072.

The previous prime is 20377667. The next prime is 20377673. The reversal of 20377671 is 17677302.

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

It is not a de Polignac number, because 20377671 - 2² = 20377667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377673) 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 7 ways as a sum of consecutive naturals, for example, 178695 + ... + 178808.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 2^20377671 is an apocalyptic number.

20377671 is a deficient number, since it is larger than the sum of its proper divisors (8222649).

20377671 is a wasteful number, since it uses less digits than its factorization.

20377671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357525.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 20377671 is about 4514.1633776371. The cubic root of 20377671 is about 273.1397130004.

The spelling of 20377671 in words is "twenty million, three hundred seventy-seven thousand, six hundred seventy-one".