1022020378 has 8 divisors (see below), whose sum is σ = 1585893780. Its totient is φ = 493389120.

The previous prime is 1022020357. The next prime is 1022020379. The reversal of 1022020378 is 8730202201.

It can be written as a sum of positive squares in 2 ways, for example, as 1020994209 + 1026169 = 31953^2 + 1013^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1022020379) 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 3 ways as a sum of consecutive naturals, for example, 8810463 + ... + 8810578.

Almost surely, 2^1022020378 is an apocalyptic number.

1022020378 is a deficient number, since it is larger than the sum of its proper divisors (563873402).

1022020378 is a wasteful number, since it uses less digits than its factorization.

1022020378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17621072.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1022020378 is about 31969.0534423527. The cubic root of 1022020378 is about 1007.2868981401.

Adding to 1022020378 its reverse (8730202201), we get a palindrome (9752222579).

The spelling of 1022020378 in words is "one billion, twenty-two million, twenty thousand, three hundred seventy-eight".