67116428 has 12 divisors (see below), whose sum is σ = 118299720. Its totient is φ = 33316512.

The previous prime is 67116407. The next prime is 67116431. The reversal of 67116428 is 82461176.

It is a super-2 number, since 2×67116428² = 9009229814958368, 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, 59801 + ... + 60912.

It is an arithmetic number, because the mean of its divisors is an integer number (9858310).

Almost surely, 2^67116428 is an apocalyptic number.

It is an amenable number.

67116428 is a deficient number, since it is larger than the sum of its proper divisors (51183292).

67116428 is a wasteful number, since it uses less digits than its factorization.

67116428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120856 (or 120854 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 67116428 is about 8192.4616569136. The cubic root of 67116428 is about 406.3899365494.

The spelling of 67116428 in words is "sixty-seven million, one hundred sixteen thousand, four hundred twenty-eight".