20870367 has 8 divisors (see below), whose sum is σ = 31802496. Its totient is φ = 11925912.

The previous prime is 20870327. The next prime is 20870371. The reversal of 20870367 is 76307802.

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

It is not a de Polignac number, because 20870367 - 2¹¹ = 20868319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20870327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496893 + ... + 496934.

It is an arithmetic number, because the mean of its divisors is an integer number (3975312).

Almost surely, 2^20870367 is an apocalyptic number.

20870367 is a deficient number, since it is larger than the sum of its proper divisors (10932129).

20870367 is an equidigital number, since it uses as much as digits as its factorization.

20870367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993837.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20870367 is about 4568.4096795274. The cubic root of 20870367 is about 275.3235508578.

The spelling of 20870367 in words is "twenty million, eight hundred seventy thousand, three hundred sixty-seven".