12020887 has 4 divisors (see below), whose sum is σ = 12728016. Its totient is φ = 11313760.

The previous prime is 12020851. The next prime is 12020903. The reversal of 12020887 is 78802021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020887 - 2⁷ = 12020759 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 (12027887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353539 + ... + 353572.

It is an arithmetic number, because the mean of its divisors is an integer number (3182004).

Almost surely, 2^12020887 is an apocalyptic number.

12020887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12020887 is a deficient number, since it is larger than the sum of its proper divisors (707129).

12020887 is an equidigital number, since it uses as much as digits as its factorization.

12020887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707128.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 12020887 is about 3467.1150831779. The cubic root of 12020887 is about 229.0756028859.

It can be divided in two parts, 120208 and 87, that added together give a triangular number (120295 = T₄₉₀).

The spelling of 12020887 in words is "twelve million, twenty thousand, eight hundred eighty-seven".