1022271520 has 48 divisors (see below), whose sum is σ = 2480404248. Its totient is φ = 397854720.

The previous prime is 1022271517. The next prime is 1022271553. The reversal of 1022271520 is 251722201.

It can be written as a sum of positive squares in 4 ways, for example, as 874503184 + 147768336 = 29572^2 + 12156^2 .

It is a super-2 number, since 2×1022271520² = 2090078121206220800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022271491 and 1022271500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80421 + ... + 92260.

Almost surely, 2^1022271520 is an apocalyptic number.

1022271520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022271520 is an abundant number, since it is smaller than the sum of its proper divisors (1458132728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022271520 is a wasteful number, since it uses less digits than its factorization.

1022271520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172733 (or 172725 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1022271520 is about 31972.9810934170. The cubic root of 1022271520 is about 1007.3693985590.

Adding to 1022271520 its reverse (251722201), we get a palindrome (1273993721).

The spelling of 1022271520 in words is "one billion, twenty-two million, two hundred seventy-one thousand, five hundred twenty".