1222528716 has 36 divisors (see below), whose sum is σ = 3101304024. Its totient is φ = 406056000.

The previous prime is 1222528649. The next prime is 1222528717. The reversal of 1222528716 is 6178252221.

It is a happy number.

1222528716 is a `hidden beast` number, since 122 + 2 + 528 + 7 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1222528716² = 2989152922889217312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1222528717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50310 + ... + 70541.

It is an arithmetic number, because the mean of its divisors is an integer number (86147334).

Almost surely, 2^1222528716 is an apocalyptic number.

It is an amenable number.

1222528716 is an abundant number, since it is smaller than the sum of its proper divisors (1878775308).

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

1222528716 is a wasteful number, since it uses less digits than its factorization.

1222528716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121142 (or 121137 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1222528716 is about 34964.6781194965. The cubic root of 1222528716 is about 1069.2674742850.

The spelling of 1222528716 in words is "one billion, two hundred twenty-two million, five hundred twenty-eight thousand, seven hundred sixteen".