67234440 has 256 divisors, whose sum is σ = 255467520. Its totient is φ = 13777920.

The previous prime is 67234429. The next prime is 67234459. The reversal of 67234440 is 4443276.

It is a super-2 number, since 2×67234440² = 9040939844227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 67234398 and 67234407.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 513175 + ... + 513305.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^67234440 is an apocalyptic number.

67234440 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 67234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127733760).

67234440 is an abundant number, since it is smaller than the sum of its proper divisors (188233080).

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

67234440 is a wasteful number, since it uses less digits than its factorization.

67234440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 67234440 is about 8199.6609686011. The cubic root of 67234440 is about 406.6279846154.

The spelling of 67234440 in words is "sixty-seven million, two hundred thirty-four thousand, four hundred forty".