67207240 has 16 divisors (see below), whose sum is σ = 151216380. Its totient is φ = 26882880.

The previous prime is 67207223. The next prime is 67207243. The reversal of 67207240 is 4270276.

It can be written as a sum of positive squares in 2 ways, for example, as 67207204 + 36 = 8198^2 + 6^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67207199 and 67207208.

It is not an unprimeable number, because it can be changed into a prime (67207243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840051 + ... + 840130.

Almost surely, 2^67207240 is an apocalyptic number.

It is an amenable number.

67207240 is an abundant number, since it is smaller than the sum of its proper divisors (84009140).

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

67207240 is a wasteful number, since it uses less digits than its factorization.

67207240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680192 (or 1680188 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 67207240 is about 8198.0021956572. The cubic root of 67207240 is about 406.5731428160.

The spelling of 67207240 in words is "sixty-seven million, two hundred seven thousand, two hundred forty".