78149708 has 36 divisors (see below), whose sum is σ = 171333792. Its totient is φ = 30915360.

The previous prime is 78149707. The next prime is 78149713. The reversal of 78149708 is 80794187.

It is a super-2 number, since 2×78149708² = 12214753720970528, which contains 22 as substring.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (78149707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12788 + ... + 17883.

It is an arithmetic number, because the mean of its divisors is an integer number (4759272).

Almost surely, 2^78149708 is an apocalyptic number.

It is an amenable number.

78149708 is an abundant number, since it is smaller than the sum of its proper divisors (93184084).

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

78149708 is a wasteful number, since it uses less digits than its factorization.

78149708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30702 (or 30693 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 78149708 is about 8840.2323498876. The cubic root of 78149708 is about 427.5390486771.

The spelling of 78149708 in words is "seventy-eight million, one hundred forty-nine thousand, seven hundred eight".