67072390 has 32 divisors (see below), whose sum is σ = 150522624. Its totient is φ = 20905440.

The previous prime is 67072373. The next prime is 67072391. The reversal of 67072390 is 9327076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67072391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42784 + ... + 44323.

It is an arithmetic number, because the mean of its divisors is an integer number (4703832).

Almost surely, 2^67072390 is an apocalyptic number.

67072390 is an abundant number, since it is smaller than the sum of its proper divisors (83450234).

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

67072390 is a wasteful number, since it uses less digits than its factorization.

67072390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87132.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 67072390 is about 8189.7735011415. The cubic root of 67072390 is about 406.3010337466.

The spelling of 67072390 in words is "sixty-seven million, seventy-two thousand, three hundred ninety".