67628144 has 20 divisors (see below), whose sum is σ = 137926440. Its totient is φ = 32034240.

The previous prime is 67628131. The next prime is 67628161. The reversal of 67628144 is 44182676.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 67628098 and 67628107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110927 + ... + 111534.

It is an arithmetic number, because the mean of its divisors is an integer number (6896322).

Almost surely, 2^67628144 is an apocalyptic number.

It is an amenable number.

67628144 is an abundant number, since it is smaller than the sum of its proper divisors (70298296).

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

67628144 is a wasteful number, since it uses less digits than its factorization.

67628144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222488 (or 222482 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 67628144 is about 8223.6332603053. The cubic root of 67628144 is about 407.4201361549.

The spelling of 67628144 in words is "sixty-seven million, six hundred twenty-eight thousand, one hundred forty-four".