67530240 has 160 divisors (see below), whose sum is σ = 240118560. Its totient is φ = 17989632.

The previous prime is 67530191. The next prime is 67530257. The reversal of 67530240 is 4203576.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68632 + ... + 69608.

It is an arithmetic number, because the mean of its divisors is an integer number (1500741).

Almost surely, 2^67530240 is an apocalyptic number.

67530240 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 67530240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120059280).

67530240 is an abundant number, since it is smaller than the sum of its proper divisors (172588320).

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

67530240 is an equidigital number, since it uses as much as digits as its factorization.

67530240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 67530240 is about 8217.6785042979. The cubic root of 67530240 is about 407.2234363662.

The spelling of 67530240 in words is "sixty-seven million, five hundred thirty thousand, two hundred forty".