656305452 has 72 divisors (see below), whose sum is σ = 1824902352. Its totient is φ = 198865920.

The previous prime is 656305423. The next prime is 656305453. The reversal of 656305452 is 254503656.

It is a happy number.

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

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (656305453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41068 + ... + 54764.

It is an arithmetic number, because the mean of its divisors is an integer number (25345866).

Almost surely, 2^656305452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656305452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912451176).

656305452 is an abundant number, since it is smaller than the sum of its proper divisors (1168596900).

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

656305452 is a wasteful number, since it uses less digits than its factorization.

656305452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740 (or 13713 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 656305452 is about 25618.4592042535. The cubic root of 656305452 is about 869.0311370566.

The spelling of 656305452 in words is "six hundred fifty-six million, three hundred five thousand, four hundred fifty-two".