67928481 has 24 divisors (see below), whose sum is σ = 104836680. Its totient is φ = 42233856.

The previous prime is 67928467. The next prime is 67928491. The reversal of 67928481 is 18482976.

It can be written as a sum of positive squares in 4 ways, for example, as 14400 + 67914081 = 120^2 + 8241^2 .

It is not a de Polignac number, because 67928481 - 2⁹ = 67927969 is a prime.

It is a super-2 number, since 2×67928481² = 9228557061934722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67928461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15325 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (4368195).

Almost surely, 2^67928481 is an apocalyptic number.

It is an amenable number.

67928481 is a deficient number, since it is larger than the sum of its proper divisors (36908199).

67928481 is a wasteful number, since it uses less digits than its factorization.

67928481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065 (or 4062 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 67928481 is about 8241.8736340713. The cubic root of 67928481 is about 408.0223639702.

The spelling of 67928481 in words is "sixty-seven million, nine hundred twenty-eight thousand, four hundred eighty-one".