78457098 has 8 divisors (see below), whose sum is σ = 156914208. Its totient is φ = 26152364.

The previous prime is 78457097. The next prime is 78457109. The reversal of 78457098 is 89075487.

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

78457098 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (78457097) 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 3 ways as a sum of consecutive naturals, for example, 6538086 + ... + 6538097.

It is an arithmetic number, because the mean of its divisors is an integer number (19614276).

Almost surely, 2^78457098 is an apocalyptic number.

78457098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78457098 is a wasteful number, since it uses less digits than its factorization.

78457098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13076188.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 78457098 is about 8857.6011425216. The cubic root of 78457098 is about 428.0988686201.

The spelling of 78457098 in words is "seventy-eight million, four hundred fifty-seven thousand, ninety-eight".