20378283 has 8 divisors (see below), whose sum is σ = 27354000. Its totient is φ = 13494048.

The previous prime is 20378273. The next prime is 20378297. The reversal of 20378283 is 38287302.

It is a happy number.

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

It is not a de Polignac number, because 20378283 - 2⁸ = 20378027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20378233) 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, 22348 + ... + 23241.

It is an arithmetic number, because the mean of its divisors is an integer number (3419250).

Almost surely, 2^20378283 is an apocalyptic number.

20378283 is a deficient number, since it is larger than the sum of its proper divisors (6975717).

20378283 is a wasteful number, since it uses less digits than its factorization.

20378283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45741.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20378283 is about 4514.2311637753. The cubic root of 20378283 is about 273.1424473631.

The spelling of 20378283 in words is "twenty million, three hundred seventy-eight thousand, two hundred eighty-three".