1222473520 has 20 divisors (see below), whose sum is σ = 2842251120. Its totient is φ = 488989376.

The previous prime is 1222473493. The next prime is 1222473541. The reversal of 1222473520 is 253742221.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7640380 + ... + 7640539.

It is an arithmetic number, because the mean of its divisors is an integer number (142112556).

Almost surely, 2^1222473520 is an apocalyptic number.

1222473520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222473520 is an abundant number, since it is smaller than the sum of its proper divisors (1619777600).

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

1222473520 is a wasteful number, since it uses less digits than its factorization.

1222473520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15280932 (or 15280926 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 1222473520 is about 34963.8887997316. Note that the first 3 decimals coincide. The cubic root of 1222473520 is about 1069.2513819088.

The spelling of 1222473520 in words is "one billion, two hundred twenty-two million, four hundred seventy-three thousand, five hundred twenty".