67236428 has 54 divisors (see below), whose sum is σ = 145521684. Its totient is φ = 27097728.

The previous prime is 67236419. The next prime is 67236439. The reversal of 67236428 is 82463276.

It is a junction number, because it is equal to n+sod(n) for n = 67236391 and 67236400.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56051 + ... + 57237.

It is an arithmetic number, because the mean of its divisors is an integer number (2694846).

Almost surely, 2^67236428 is an apocalyptic number.

67236428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67236428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72760842).

67236428 is an abundant number, since it is smaller than the sum of its proper divisors (78285256).

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

67236428 is a wasteful number, since it uses less digits than its factorization.

67236428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1213 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 67236428 is about 8199.7821922293. The cubic root of 67236428 is about 406.6319923256.

The spelling of 67236428 in words is "sixty-seven million, two hundred thirty-six thousand, four hundred twenty-eight".