20880286 has 8 divisors (see below), whose sum is σ = 35794800. Its totient is φ = 8948688.

The previous prime is 20880283. The next prime is 20880289. The reversal of 20880286 is 68208802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20880283) and next prime (20880289).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880281) 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, 745711 + ... + 745738.

It is an arithmetic number, because the mean of its divisors is an integer number (4474350).

Almost surely, 2^20880286 is an apocalyptic number.

20880286 is a deficient number, since it is larger than the sum of its proper divisors (14914514).

20880286 is a wasteful number, since it uses less digits than its factorization.

20880286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491458.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 20880286 is about 4569.4951581110. The cubic root of 20880286 is about 275.3671613635.

The spelling of 20880286 in words is "twenty million, eight hundred eighty thousand, two hundred eighty-six".