1022061620 has 24 divisors (see below), whose sum is σ = 2160549888. Its totient is φ = 406116000.

The previous prime is 1022061613. The next prime is 1022061629. The reversal of 1022061620 is 261602201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1022061592 and 1022061601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022061629) 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 7 ways as a sum of consecutive naturals, for example, 166196 + ... + 172235.

It is an arithmetic number, because the mean of its divisors is an integer number (90022912).

Almost surely, 2^1022061620 is an apocalyptic number.

1022061620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022061620 is an abundant number, since it is smaller than the sum of its proper divisors (1138488268).

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

1022061620 is a wasteful number, since it uses less digits than its factorization.

1022061620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338591 (or 338589 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1022061620 is about 31969.6984658911. The cubic root of 1022061620 is about 1007.3004471092.

Adding to 1022061620 its reverse (261602201), we get a palindrome (1283663821).

The spelling of 1022061620 in words is "one billion, twenty-two million, sixty-one thousand, six hundred twenty".