78493670 has 8 divisors (see below), whose sum is σ = 141288624. Its totient is φ = 31397464.

The previous prime is 78493663. The next prime is 78493673. The reversal of 78493670 is 7639487.

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

It is a super-2 number, since 2×78493670² = 12322512460137800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78493673) 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, 3924674 + ... + 3924693.

It is an arithmetic number, because the mean of its divisors is an integer number (17661078).

Almost surely, 2^78493670 is an apocalyptic number.

78493670 is a deficient number, since it is larger than the sum of its proper divisors (62794954).

78493670 is a wasteful number, since it uses less digits than its factorization.

78493670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849374.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 78493670 is about 8859.6653435669. The cubic root of 78493670 is about 428.1653763046.

The spelling of 78493670 in words is "seventy-eight million, four hundred ninety-three thousand, six hundred seventy".