68928272 has 20 divisors (see below), whose sum is σ = 152627136. Its totient is φ = 29540640.

The previous prime is 68928253. The next prime is 68928287. The reversal of 68928272 is 27282986.

It is a super-2 number, since 2×68928272² = 9502213361811968, which contains 22 as substring.

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, 307604 + ... + 307827.

Almost surely, 2^68928272 is an apocalyptic number.

It is an amenable number.

68928272 is an abundant number, since it is smaller than the sum of its proper divisors (83698864).

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

68928272 is a wasteful number, since it uses less digits than its factorization.

68928272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615446 (or 615440 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 68928272 is about 8302.3052220453. The cubic root of 68928272 is about 410.0144194810.

The spelling of 68928272 in words is "sixty-eight million, nine hundred twenty-eight thousand, two hundred seventy-two".