1022072556 has 24 divisors (see below), whose sum is σ = 2387255920. Its totient is φ = 340345152.

The previous prime is 1022072539. The next prime is 1022072561. The reversal of 1022072556 is 6552702201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30751 + ... + 54678.

Almost surely, 2^1022072556 is an apocalyptic number.

It is an amenable number.

1022072556 is an abundant number, since it is smaller than the sum of its proper divisors (1365183364).

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

1022072556 is a wasteful number, since it uses less digits than its factorization.

1022072556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86433 (or 86431 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1022072556 is about 31969.8695023924. The cubic root of 1022072556 is about 1007.3040397818.

Adding to 1022072556 its reverse (6552702201), we get a palindrome (7574774757).

The spelling of 1022072556 in words is "one billion, twenty-two million, seventy-two thousand, five hundred fifty-six".