68870028 has 12 divisors (see below), whose sum is σ = 160696760. Its totient is φ = 22956672.

The previous prime is 68869991. The next prime is 68870029. The reversal of 68870028 is 82007886.

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

It is not an unprimeable number, because it can be changed into a prime (68870029) 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, 2869573 + ... + 2869596.

Almost surely, 2^68870028 is an apocalyptic number.

It is an amenable number.

68870028 is an abundant number, since it is smaller than the sum of its proper divisors (91826732).

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

68870028 is a wasteful number, since it uses less digits than its factorization.

68870028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739176 (or 5739174 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 68870028 is about 8298.7967802568. The cubic root of 68870028 is about 409.8989003153.

The spelling of 68870028 in words is "sixty-eight million, eight hundred seventy thousand, twenty-eight".