20379867 has 8 divisors (see below), whose sum is σ = 27517440. Its totient is φ = 13414440.

The previous prime is 20379841. The next prime is 20379899. The reversal of 20379867 is 76897302.

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

It is not a de Polignac number, because 20379867 - 2⁷ = 20379739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20379467) 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, 42759 + ... + 43232.

It is an arithmetic number, because the mean of its divisors is an integer number (3439680).

Almost surely, 2^20379867 is an apocalyptic number.

20379867 is a deficient number, since it is larger than the sum of its proper divisors (7137573).

20379867 is an equidigital number, since it uses as much as digits as its factorization.

20379867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86073.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 20379867 is about 4514.4066055241. The cubic root of 20379867 is about 273.1495242830.

The spelling of 20379867 in words is "twenty million, three hundred seventy-nine thousand, eight hundred sixty-seven".