67730040 has 384 divisors, whose sum is σ = 282931200. Its totient is φ = 14100480.

The previous prime is 67730027. The next prime is 67730063. The reversal of 67730040 is 4003776.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 67729986 and 67730013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2184825 + ... + 2184855.

It is an arithmetic number, because the mean of its divisors is an integer number (736800).

Almost surely, 2^67730040 is an apocalyptic number.

67730040 is a gapful number since it is divisible by the number (60) 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 67730040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141465600).

67730040 is an abundant number, since it is smaller than the sum of its proper divisors (215201160).

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

67730040 is a wasteful number, since it uses less digits than its factorization.

67730040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 67730040 is about 8229.8262436093. The cubic root of 67730040 is about 407.6246548019.

The spelling of 67730040 in words is "sixty-seven million, seven hundred thirty thousand, forty".