78241270 has 8 divisors (see below), whose sum is σ = 140834304. Its totient is φ = 31296504.

The previous prime is 78241253. The next prime is 78241279. The reversal of 78241270 is 7214287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78241270² = 12243392662425800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78241279) 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 3 ways as a sum of consecutive naturals, for example, 3912054 + ... + 3912073.

It is an arithmetic number, because the mean of its divisors is an integer number (17604288).

Almost surely, 2^78241270 is an apocalyptic number.

78241270 is a deficient number, since it is larger than the sum of its proper divisors (62593034).

78241270 is a wasteful number, since it uses less digits than its factorization.

78241270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824134.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 78241270 is about 8845.4095439386. The cubic root of 78241270 is about 427.7059550464.

The spelling of 78241270 in words is "seventy-eight million, two hundred forty-one thousand, two hundred seventy".