20829286 has 8 divisors (see below), whose sum is σ = 31970664. Its totient is φ = 10172400.

The previous prime is 20829269. The next prime is 20829313. The reversal of 20829286 is 68292802.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121015 + ... + 121186.

It is an arithmetic number, because the mean of its divisors is an integer number (3996333).

Almost surely, 2^20829286 is an apocalyptic number.

20829286 is a deficient number, since it is larger than the sum of its proper divisors (11141378).

20829286 is a wasteful number, since it uses less digits than its factorization.

20829286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242246.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20829286 is about 4563.9112611881. The cubic root of 20829286 is about 275.1427842536.

It can be divided in two parts, 20829 and 286, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20829286 in words is "twenty million, eight hundred twenty-nine thousand, two hundred eighty-six".