78048091 has 16 divisors (see below), whose sum is σ = 87120000. Its totient is φ = 69321600.

The previous prime is 78048041. The next prime is 78048101. The reversal of 78048091 is 19084087.

It is a cyclic number.

It is not a de Polignac number, because 78048091 - 2¹⁵ = 78015323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78048091.

It is not an unprimeable number, because it can be changed into a prime (78048011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156160 + ... + 156658.

It is an arithmetic number, because the mean of its divisors is an integer number (5445000).

Almost surely, 2^78048091 is an apocalyptic number.

78048091 is a deficient number, since it is larger than the sum of its proper divisors (9071909).

78048091 is a wasteful number, since it uses less digits than its factorization.

78048091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 78048091 is about 8834.4830635414. The cubic root of 78048091 is about 427.3536605690.

The spelling of 78048091 in words is "seventy-eight million, forty-eight thousand, ninety-one".