652978356 has 12 divisors (see below), whose sum is σ = 1523616192. Its totient is φ = 217659448.

The previous prime is 652978351. The next prime is 652978397. The reversal of 652978356 is 653879256.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 652978299 and 652978308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652978351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27207420 + ... + 27207443.

It is an arithmetic number, because the mean of its divisors is an integer number (126968016).

Almost surely, 2^652978356 is an apocalyptic number.

It is an amenable number.

652978356 is an abundant number, since it is smaller than the sum of its proper divisors (870637836).

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

652978356 is a wasteful number, since it uses less digits than its factorization.

652978356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54414870 (or 54414868 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 652978356 is about 25553.4411772661. The cubic root of 652978356 is about 867.5601504135.

The spelling of 652978356 in words is "six hundred fifty-two million, nine hundred seventy-eight thousand, three hundred fifty-six".