68224528 has 10 divisors (see below), whose sum is σ = 132185054. Its totient is φ = 34112256.

The previous prime is 68224487. The next prime is 68224543. The reversal of 68224528 is 82542286.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 17073424 = 7152^2 + 4132^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2132001 + ... + 2132032.

Almost surely, 2^68224528 is an apocalyptic number.

It is an amenable number.

68224528 is a deficient number, since it is larger than the sum of its proper divisors (63960526).

68224528 is a wasteful number, since it uses less digits than its factorization.

68224528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264041 (or 4264035 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

The square root of 68224528 is about 8259.8140414903. The cubic root of 68224528 is about 408.6142548179.

The spelling of 68224528 in words is "sixty-eight million, two hundred twenty-four thousand, five hundred twenty-eight".