67628072 has 8 divisors (see below), whose sum is σ = 126802650. Its totient is φ = 33814032.

The previous prime is 67628063. The next prime is 67628129. The reversal of 67628072 is 27082676.

It can be written as a sum of positive squares in only one way, i.e., 47251876 + 20376196 = 6874^2 + 4514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×67628072² = 9147112244874368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226747 + ... + 4226762.

Almost surely, 2^67628072 is an apocalyptic number.

It is an amenable number.

67628072 is a deficient number, since it is larger than the sum of its proper divisors (59174578).

67628072 is a wasteful number, since it uses less digits than its factorization.

67628072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453515 (or 8453511 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 67628072 is about 8223.6288826770. The cubic root of 67628072 is about 407.4199915688.

The spelling of 67628072 in words is "sixty-seven million, six hundred twenty-eight thousand, seventy-two".